Eternal Fighter Zero/Advanced Mechanics

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This is a translation of the omake page on Bamboo Sword. What you will find here is findings from Japanese players over the years relating to the more specific parts of the game's mechanics.

Air Throw Ranges and Power

Name Pixels
Nagamori -15 68 48 1200
Nanase 9 36
※Bare-handed 40
46 1400
Akane 11 34 49 1200
Misaki 17 28 48 1300
Mio -3 50 46 1000
Mayu 12 28 46 1000
Unknown 17 35 48 1000
Ayu 17 28 47 1100
Mai 18 34 49 1300
Makoto 6 44 48 1100
Shiori 22 28 47 1100
Nayuki (Asleep) -6 56 51 1300
Sayuri 10 44 48 1200
Misuzu 11 39 47 1200
Kano 3 44 48 1200
Minagi 24 26 48 1200
Kaori -1 36 43 1400
Doppel Nanase 9 40 46 1400
Ikumi 6 44 53 1200
Mishio 1 48 46 1150
Nayuki (Awake) -3 47 48 1200
Akiko 1 49 49 1200
  • Excluding Kanna, all characters begin an air throw during frame 1 of jC or j6C. If all requirements are met, the air throw happens on frame 2.
  • Air throws hitboxes last 1 frame (frame 2).
  • If the air throw fails, your character will perform j6C (or jC if j6C does not exist).
  • With some exceptions (Ikumi, Kaori, etc.), characters with slow jumps will have a larger throw box, while fast characters will have a smaller throw box.
  • All character’s throw boxes are centered slightly upwards, but you cannot air throw an opponent directly above you, so beware.
  • The numbers above are the number of pixels from the top of your character’s hitbox vertically and the middle of your character’s hitbox horizontally that will result in a successful air throw.
  • Air throw attack power tends to correlate with character size.

The Strengths and Weaknesses of Recoil Counter (RC)

In general, a move that is Recoil Guarded (RGed) may in turn RG the opponent’s move provided the execution of that move has not ended. As long as the game recognizes all the actions as one move, RG may be performed. This includes RGing before a hitbox is generated, during recovery, during dash-type moves, or during special attacks. This means that, despite their original weaknesses, moves such as DPs or moves with large recovery are actually safer to have been RGed. As such, higher level EFZ players may choose to forego RGing in favor of regular guarding to provide them some benefit.

As you cannot normal throw during RG’s recovery, command throws become extremely powerful.

Moves that have multiple parts (Minagi’s 5C, Ikumi’s jB, etc), or during attacks that overlap with Flicker Instant Charged (FICd) projectiles can have the first attack RGed, and any time during the second attack, RC may be performed. However, during moves such as Akane’s leap skills, Makoto’s Three Burst (j2CCC), or Mishio’s Running Flame (214A/B/C), once an additional input is pressed, the game recognizes this as a completely different move. As such, once the additional input is pressed, you lose the ability to RC.

Moves with multiple hits will continue to retain their ability to RC, even if only the first hit is RGed while the rest are normally blocked. It seems that only moves that require an additional input to advance to another part of the move are affected. There are exceptions to this rule. Some moves lose the ability to RC during the latter part despite having input no additional moves (the latter part is considered a separate move on its own).

E.g.: During the landing recovery of Akane’s Stun Needle, or during the landing recovery of Nayuki’s (Awake) Somersault Spike (RC is doable while in the air), etc.
The first example can be considered deliberate, but the latter example is in opposition to other character’s DPs, and is rather unfortunate for Nayuki.

As an aside, if both an RC and a counter move are performed at the same time, the counter will take precedence. This is only a consideration for characters with both an FIC-able projectile and a counter (Sayuri and Misaki)...

Untech Time Calculation

0.75 x min(1, Power/100) x (Move’s Base Untech Time) (in frames)

Power maxes at 100 and will not exceed it for this calculation. Even if the UI lists 142 Power, the Power will only be 100.

Move's Base Untech Time can be found here under the 受身時間 column.

Using Mayu as an example: Mayu's 5A has 30 base untech time. Let's say the current proration (under Power in the game UI) is 40, we would need to do: 0.75 x 0.4 x 30 = 9 frames.

Untech Time From a Wallbounce

(Wallbounce Move's Base Untech Time) x 2 = Untech Time

This also includes the time it takes to reach the wall, so any time spent in the air to reach the wall is reduced from the untech time after the wallbounce.

Instant Charge

The character that performs the Instant Charge (IC) is actually able to act 1 frame faster.

FICs are treated the same as a super flash. See below for detailed information.

Super Flash Specifics

  • Both characters are invincible during the freeze.
  • Second player is slower to act by ⅓ frame.
  • A character that performs an IC during the super freeze is able to act 1 frame faster (during which they are invincible). However, this is usually a combination of both the freezes, and really doesn’t matter in the end.
  • This is also the reason for some moves being guaranteed using the super flash.

Wakeup Time

This timing is only counting from the time that the character hits the ground until they are able to act, and does not include other information such as fall speed, or lingering hitboxes. All characters, excluding Kano, stay on the ground for 33.3 frames. There are various types of wakeups, including ones that appear to be moving but are considered still invulnerable, ones that appear to be waking up but are able to act, etc.

Name Hitting the Ground ~ Downed State Waking Up Total (+33)
Nagamori 18 12 63
Nanase 19 15 67
Akane 19 16 68
Misaki 19 20 72
Mio 18 35 86
Mayu 19 26 78
Unknown 19 26 70
Ayu 15 20 68
Mai 16 22 71
Makoto 17 15 65
Shiori 19 19 71
Nayuki (Asleep) 19 16 68
Sayuri 19 19 71
Misuzu 16 18 67
Kano 19 26 ※88
Minagi 19 15 67
Kaori 19 19 71
Doppel Nanase 19 15 67
Ikumi 19 19 71
Mishio 20 15 68
Nayuki (Awake) 19 16 68
Akiko 25 16 74
Kanna 19 43 95

※Kano’s downed time is 10 frames longer than others.


Weak:Medium:Strong = 3f:6f:9f

I’m not 100% sure on this, but years of experience tells me this is probably right.

As the game is running in ⅓ frames, moves with special hitstop (moves that have no recovery time for you) have the above values as positive frames.

During Air Techs

All characters have 15 frames of vulnerability during an air tech.

If you are hit during the first frame of teching, the hit is considered a part of the previous combo.

Time Before Being Able to Attack During a Dash

From dash startup to the time you stop and are able to act. During movement, most characters are able to cancel their dash into a dash attack, special move, jump, or backdash. While it might appear that there is a difference in when characters can dash-up throw, the difference comes from each character’s dash startup (harder to see with slower characters). Characters with hover dashes are listed later.

Name Dash
Nagamori 19
Nanase 20
Akane 20
Misaki 19
Mio 19
Mayu 20~32 Special step-dash
Distance travelled is affected by holding 4 or 6.
If a dash attack is input (after frame 4 of dash), landing recovery is extended by 10 frames.
Unknown 33 Special dash, invincible during part of dash. For more information, refer to the character pages.
Mai 10 Step-dash.
Before movement = 2 frames
Step movement = 8 frames
Landing recovery = 0 frames
Makoto 20
Shiori 19
Kano 19
Minagi 20
Kaori 23 Ducking-type, may cancel into attack. For more information, refer to the character pages.
Doppel Nanase 20
Ikumi 20
Mishio 19 If an attack is input after 20 frames into the dash, the acceleration of the attack is doubled.
Nayuki (Awake) 20

Time Before Being Able to Act During a Hover Dash

Name Forward
Ayu 13F 14F
Sayuri 12F
Nayuki (Asleep) 17F
Misuzu 13F 14F
Akiko 17F

Time Before Being Able to Attack During an Air Dash

Name Time Unable to Act
Misaki, Shiori, Ikumi, Mishio 12F
Others 14F
Nayuki (Asleep) 18.66F

Misaki, Shiori, Ikumi, Mishio are able to act on frame 13 of their air dashes.

Nayuki (Asleep) is able act on frame 19.

All others are able to act on frame 15.

Unlike ground dashes, air dashes may not be cancelled into any other action during this time. The only exception is Mayu, who may double jump after an air dash.

Character Heights (as of version 4.02)

Name Crouching Crouch Block Standing Stand Block
Nagamori 56 58 85 85
Nanase 55 56 85 88
Akane 55 54 84 83
Misaki 55 55 91 82
Mio 49 48 76 70
Mayu 44 47 54 57
Unknown 55 55 69 70~73
Ayu 50 51 71~85 68
Mai 52 55 92 87
Makoto 54 57 70 68~70
Shiori 55 55 85 82
Nayuki (Asleep) 50 40 84~89 79
Sayuri 55 55 87 87
Misuzu 56 56 86 86
Kano 51 51 83 83
Minagi 55 55 91 82
Kaori 55 55 89 89
Doppel Nanase 55 56 75 88
Ikumi 46 47 86 86
Mishio 55 55 85 82
Nayuki (Awake) 58 58 89 89
Akiko 58 58 95 95
Kanna 62 62 91 82

The above values are only on the Y-axis.

During actual matches, the X-axis will come into play, so don’t rely on this too much.

Ayu and Nayuki (Asleep) will dance around during neutral standing, so their heights vary greatly.

Button Priority

EFZ prioritizes buttons in the order of [S > C > B > A].

This property persists no matter the combination or the number of buttons pressed.

This allows for easier execution of longer commands or moves with very small cancel windows.

Example: Ayu -- 236 + C&S → + 236A/B/C

The S button is prioritized, so no special move is performed. As there is no normal move associated with S, standing C is performed.

Once the next 236A/B/C is input, Shining Finger will be performed.

Advantageous Frame Differences Between Block and Hit

Attack Level On Block On Hit
Attack Level 1 9F 10F
Attack Level 2 14F 16F
Attack Level 3 21F 23F
Air Block (attack level makes no difference) 19F Attack Base Untech Time * Proration

Certain moves will have special hitstop, so take note.

E.g. Mai (5B), Nanase (5A), Misaki (5A), etc.

Air block is special in that attack level makes no difference.

After the Recovery of an Action, 1 Frame of Special Recovery Exists

After the recovery of any action, before any other action may occur, there exists 1 frame in which the only action you may take is to block. This includes recovering from being hit or blocking a move, so the player on defense is at a disadvantage in these situations. Whether or not two moves combo may be a result of this slight shift of frames.

Makoto or Mio 66B (both +4f on hit) linked into 2A (4 frame startup) will not combo because of the extra 1 frame of recovery, but Nagamori or Sayuri’s 5C (10 frame startup) will chain from their 5A/2A (hitstop of 10 frames), since chains do not have this extra recovery.

RG Recovery Time and Advantage Difference

Recovery Time Normal Move Cancel Timing Special Move Cancel Timing
Stand RG 20F 1F 1F
Crouch RG 22F 3F 3F
Air RG 22F 3F 3F

First of all, RG recovery occurs from the moment the move is guarded, and applies 20 frames of hitstop to both players. Also, the moment RG occurs, all directional inputs are reset for both players. During this hitstop, no button inputs are accepted. However, directional input is accepted during this hitstop, so players may input directions for special moves during RG recovery.

After RG’s hitstop ends, the player whose attack was RGed may begin input immediately. The player who RGed must wait an additional recovery period (listed above) before they are able to act. Blocking is available from frame 0, while normal attacks and special attacks are available from frame 1 after hitstop (frame 3 for crouch RG and air RG). Jumps, dashes, and throws are not available until the RG recovery is fully gone (in other words, in order to counterattack with a normal throw, you must wait 20+5 frames or more).

Additionally, trades cannot happen after RG recovery, so it is probably correct to say there is ⅓ frame less recovery (able to act earlier).

If you plan on counterattacking from RG, or confirming the RG and preventing a counterattack, it is best to use a move or special that will beat your opponent’s fastest move. ※Example Mio’s Costume-Onmyoji has a startup of 4 frames. If used after a standing RG against a 5 frame normal, Mio’s DP will straight out win. Even from crouching RG, moves such as Ayu’s 5B->f5B that have a 7 frame startup will be cleanly beaten by Mio’s DP. If both were working at the same startup speed, these moves would trade. However, since one move always wins, we can safely assume that a ⅓ frame advantage exists. We can confirm by binding both players attack with the same startup time to the same keyboard press, and this will result in a trade. Therefore we can assume that the ⅓ frame difference exists in the RG recovery.

Concerning the Buffer Window for Specials

Buffer windows for certain moves are listed below. Obviously, the first input is considered frame 1, but note that the window for the buffer does not begin until the second input is pressed. You can use the 6 directional input used in 41236 moves to shorten the time needed for follow up moves.

Command Buffer Window (frames) Notes
236 15
214 15
623 15
412 15
41236 20
63214 20
22 (Including IC) 15 Reverse Air Raid and Safety Wall are 10 frames
236236 30
214214 30
2363214 30
2141236 30
641236 25
463214 25
4123641236 45
6321463214 45
222 20 High-End Crash
236236236 35 Sword of Friendship
23693 35 I'm Not Alone
2]5[63 20 Meat Bun
C236236 30 Super Electric Shadow Bullet
236236BC 30 Perfectly Freezing Tornado Strike
666S 30 Silent Pose
Ordered-button types (BA6BC etc) 45 Directional keys may be pressed at the same time as buttons.

Special Property of Input Moves with a Single Direction

There are various moves in the game that can chain from an attack of the same chain level, e.g. Ayu’s step-kick, Mai’s Dispersing, Makoto’s Mako Leap, Kano’s Napalm Beat, etc. If, during the animation of a move, that button is pressed again (for example, Mai 5C -> 5C), then as long as a forward directional input is pressed during the cancel window, the chainable move will come out (Mai’s Dispersing). With the exception of ordered-button inputs, inputting the command during the buffer window of the move will result in the chainable move occurring. However, in this game, most chains require inputting the direction before the button input, so it really is just an odd feeling to end on a directional input. If you try out Nagamori’s [B B6] quickly, you should be able to see what I’m talking about.

Anyhow, just knowing this special property will result in less mishaps, so players using characters with these special moves should take note. As an aside, the next Tasofro fighter, IaMP, also has this special property.

Jump Startup Specifics

The jump preparation generally takes 3 frames.

Frame 1, you can still be thrown. Frame 2 is still considered on the ground. Frame 3 is considered airborne, but no action may be taken. From frame 4 onward, RG and normal moves may be used.

Additionally, during Ayu’s jump startup, she gains invulnerability at her feet.

Sayuri cannot block or RG in the first 2 airbourne frames of her jump, meaning she can only block or RG from frame 6 onward.


Health is the same for every character, and is a total of 10000 points. Guts applies, and is stronger the lower your character’s health is, for a maximum of 50% damage reduction. The RF gauge has a very slight effect on attack power, and will result in 110% damage at max RF gauge.

Using the attack’s base power, the above guts percentage, and the additional RF gauge attack power, you can determine how much damage a move will do.

Buffer Window for RG

  • Once back or down-back is pressed, RG will occur within the next 10 frames if a move is blocked.
  • On the ground, once the 10 frame buffer window is over, a new RG buffer window cannot start for the next 10 frames.
  • When blocking, hitstop time is added onto this cooldown time, so unless there is a very long interval between attacks, you generally cannot RG two moves in a row.
  • In the air, no restrictions are in place, so theoretically you could be attempting to RG every single possible moment.


As expected when attempting to RG, you must let go of the directional input. During this time your character will not be blocking. During hitstop of a block move you are able to let go of the directional input and still continue blocking. If you attempt to RG moves with a small amount of hitstop (usually low attack level moves), you can lose your blocking status, so be careful.

Unthrowable States

For 6 frames after wakeup or blocking, your character will be unthrowable. Air blocks follow this same rule for air throws. This 6 frames lasts no matter what action the blocker or character on wakeup takes. After a hit, your character is considered throwable on the first frame after hitstun ends. Also, even if you air block a move, the moment you touch the ground your character is considered throwable.

By the way, every character becomes unthrowable during their throw startup. On the second frame of a jump, your character becomes unthrowable (frame 1 can still be thrown… see Jump Startup Specifics)

Some Throws Are Considered Unblockable Strike Moves

As they are considered attacks, they can trade with moves (for example, Mai’s ground throw). The throw is considered a zero (0) damage, level 1 attack (same as 2A/5A) in this case. The throw cannot hit if the opponent is in the hit or block states. However, you may combo these moves with either a projectile or other previously set attack, and the hits may occur at the same time (comboing must be done during hitstun).

As a note, all air throws are considered unblockable strike moves.

Properties of Air Special Moves

Generally for special moves that may be performed either on the ground or air, the air version cuts down on the animation needed for the ground version, leading to the startup becoming faster. As an example, Nagamori’s Smash & Prologue and Misaki’s RF Assault Gush follow this rule. An exception to the rule is Ayu’s Shining Arrow, which has the exact same animation on both the ground and the air.

EFZ Runs in ⅓ Frame Steps

There are times that, even though the frame data is exactly the same, one move will always beat the other. Because of this, we can determine that jumping, walking, and dashing for all characters happens in ⅓ frame increments. The exact number varies between moves, but for the most part, you can ignore this. There are some moves that are affected by the ⅓ frame stepping, however, such as Nanase’s Rapture Full Swing and her Big Bang Hitting Method (damage varies every ⅓ frame). This is why you can get three different damage values even though you hit the swing at the exact same timing.

The Game Displays 60 FPS, But There Are Differences Between PCs

Usually not an issue if running the game via EFZ Revival.

The actual correct running speed of the game seems to be about 64-65 FPS.

If you feel something off while playing on someone else’s computer, you should check for this discrepancy.

If You Press F1-F4 During Character Select, You Can Switch Between Button Configurations 1-4

Need to verify this works on Revival.

Even if you change this during the game, the selection won’t be saved. It will boot up the next time with the same button configuration as it did before (starting up with config 1, switching to 2, and restarting will result in button configuration 1).

Pretty useful to know.

Damage Scaling

Damage scales according to the Power displayed under the combo hit counter; the damage of a move is the maximum between the Base Move Damage and Power * Base Move Damage.

Power can increase beyond 100% by using a Blue Instant Charge.

During a combo, Power is computed according to the following equation:

New Power = Old Power - (Old Power * Current Move's Proration Value)

If the factor (Old Power * Current Move's Proration Value) is above 1 (or 100%), then the Move's proration is applied twice. It is therefore more efficient to use BIC later in the combo.

Eternal Fighter Zero

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Nayuki (asleep)Nayuki (awake)RumiSayuriShioriUNKNOWN