ERROR 404 Fight Released! (Butterfly404) (Sans/William)|By BossHim [Undertale AU]

Game URL:
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⚠️⚠️FLASH WARNING⚠️⚠️
A very small number of people may experience epileptic symptoms when they see certain visual images, including flashing effects or patterns that may appear in video games.
Even people with no history of epilepsy may have undiagnosed symptoms that may lead to "photosensitive seizures" while playing video games.
If you develop any symptoms, please stop playing immediately and consult a doctor.
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Tips:
-The plots of Error 404 fight and Butterfly 404 fight are not related.
-The Chara in the game is not Alphatale Chara.
-The difficulty of this game has been adjusted, so it is not too high. After testing, both the normal mode and the easy mode can be 100% completed. Everyone can challenge with confidence.
-Both battles in this game will be There are two endings each
(Debug=bad ending/ No Debug=good ending)
-(Since this game is a big project, it will take some time to start the game.)
-[Because this game has many special effects, it is easy to cause lag, and lag will cause some unpredictable bugs. If you feel stuck while playing, you can go to the settings to lower or turn off the special effects. ]
-No hit is very very difficult, but maybe possible???
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Error 404 Sprite by: @BossHim  (ME)
Butterfly 404 Sprite by: @BossHim  (ME)
Thunder ball, Energy shield, GB Sprite by: @BossHim  (ME)
All game production by: @BossHim (ME)
Some attacks Engine by: @BossHim (ME)
Game testing B_T_4378, KongMing2403, happia
Game text provided Chuxin
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If there are new announcements or new games released in the future,
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Special thank:
Game Engine by Xx_Kimchi_xX
Some attacks Engine by chara-YTsab
Undertale by toby fox
Alphatale by SHADIKAL15
Menu music By Natharie Mugbovan
Game over music by Darkronaut
Creait music by Darkronaut
ERROR404 music by N/A Music
Butterfly404 music by FrostFM
Frame program by --Shiran-- 
Screen rotation Small screen reference sati328
Sound of saikyodamasi
Button display by LucasBr003
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Chapters:
0:00 menu
0:27 Error 404
11:00 Error 404 final attack
11:58 Error 404 (Bad ending)
12:30 Error 404 the end
13:00 B.u.t.t.e.r.f.l.y 404
15:40 B.u.t.t.e.r.f.l.y 404 final attack
16:17 B.u.t.t.e.r.f.l.y 404 (Bad ending)
16:26 the end
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Tags: (ignore)
Undertale, Sans, Chara, Fight, UndertaleAU, Turbowarp, Undertalefangame,
AU, UT, fangame, action, rpg ,other, game, art, games, Error, Alphatale, Fight,
Error404, 404, Butterfly404, William, Butterfly, Scratch, battle

[BossHim]

⚠⚠FLASH WARNING⚠⚠
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Tips:
(Sorry, there was an error in some text in the game, it has been fixed now👌)
-The plots of Error 404 fight and Butterfly 404 fight are not related.
-The Chara in the game is not Alphatale Chara.
-The difficulty of this game has been adjusted, so it is not too high. After testing, both the normal mode and the easy mode can be 100% completed. Everyone can challenge with confidence.
-Both battles in this game will be There are two endings each
(Debug=bad ending/ No Debug=good ending)
-(Since this game is a big project, it will take some time to start the game.)
-[Because this game has many special effects, it is easy to cause lag, and lag will cause some unpredictable bugs. If you feel stuck while playing, you can go to the settings to lower or turn off the special effects. ]
-No hit is very very difficult, but maybe possible???
ーーーーーーーーーーーーーーーーーーーーーーーー
Error 404 Sprite by: @BossHim (ME)
Butterfly 404 Sprite by: @BossHim (ME)
Thunder ball, Energy shield, GB Sprite by: @BossHim (ME)
All game production by: @BossHim (ME)
Some attacks Engine by: @BossHim (ME)
Game testing B_T_4378, KongMing2403, happia
Game text provided Chuxin
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[PeterTheKajeeter]

I love how if you check the endings for both fights it literally says bad ending.

[bricks]

I will not complain about the difficulty of the attacks or blaster spam, can't we just appreciate how well made the fangame was made?

[adenricablanca]

Merg is gonna have one hella field day with this one ☠️

[AshButHesTheRealOne]

This is actually like a perfect UJD 404 fight
he has all the attacks from reworked 404 and everything

[hvlahoangtutai]

YES SIR YOU'RE MAKE ANOTHER MASTERPIECE MAN, like the gameplay and the attack is honestly amazing, i hope you can have a nice day and can make some good game as thing, good job dude you are good as this.

[Primster-k]

Is it just me or is butterfly 404 throwing planets now, instead of energy spheres. I figured it would be galaxies or universes by this point. Planets mine as well be space dust for them by now.

[romek]

dustdustdust needed to destroy debug to kill you but Error 404 is so powerful that he can even kill you in debug mode. I love the details and also great game.

[FrostFM]

Pretty cool. Was neat to see my song used in the Butterfly 404 phase.

[christopherearth]

This has truly been.. an Undertale Judgement Day.

[KingJacob]

I love the ui buttons, gradient looks amazing!!!!

[UJDInsanity]

"You. Foolish human. You're just a chess piece in my game..!" *shakes butt accelerately*

[Puffshroom.]

"Guys, no hit is possible trust me!"

[t_h_e_g_r_e_e_n_o_n_e]

HOLY BUTTERFLY 404's MODEL IS INSANE

[erroro]

This is the most accurate and amazing error404 battle ive ever seen, we all thank you.

[GreenSans-L]

Error404: *Doesn't even try*
Chara: Oh god...

[Cxshorzz]

When your friend dies and it’s the final boss and he says, “Hold on, I’ll respawn in 20 seconds”
The situation I’m in: 15:40

[dater]

How many monsters have you killed?
Chara: yes

[SmokeyAsura]

I'm not gonna lie out, I myself an AlphaTale enthusiast say that this right here might be for as long as I know might be the best Error404 fight to have been made that is not animated but actually created and cannon (except some of the blasters are white rather then black but meh) I am most impressed by this from what you have made BossHim, and because of this, I feel inspired to make a 3D model of Error404 for a game I play as well as many others known as VRC, I already made an Omnipotent and is being fixed in unity right now actually, but other then that, I hope to see more AlphaTale Fights like this soon (pls do alpha next Ngl there is none out there except one clip but they did him dirty and made him have 2d blaster that looked like they were taken out of a picture and the audio for him was messed up)

[teddyrichard]

3:50 when bro pulls out the touhou sound effect, you know shit just got real