v3.3
Balance changes:
- Bone ladder attack bones slightly closer together.

Bug fixes:
- Fixed attack/special to continue not working when beating sans (3rd try again, hopefully it works this time)

v3.2

Bug fixes:
- Player HUD should disappear on win screen.
- Blue outline properly disappears after gravity attacks.
- Should be able to properly exit stats screen by pressing attack.

Other:
- Can now press special to exit stats screen.

v3.1

Balance changes:
- Opening attack bone wave height adjusted.

v3.0

The 'Survival Mode' update

New:
- Survival Mode. You get 2x max health, but the attacks come immediately one after another without any break. Last till the final attack to beat this mode.
- To activate Survival mode, you first need to obtain a code by beating Sans on standard difficulty. The code consist of a combination of directional inputs you have to press in a set order at the start of the match (during the hallway cutscene segment), which will immediately put you into Survival mode.
- Each code is character specific, you can only use that code while playing singleplayer with that particular character.
- Survival mode is the same regardless of whether you started in Standard mode or Expert mode.
- For starters, Zetterburn's code is: down - up - right - right - left - down - down - up.

Balance changes:
- Bone platforms attack bone spacing increased.
- Blaster platforms attack platforms spawn more frequently.
- Cutscene diagonal blaster attack blaster size decreased.
- Metabones spawn rate decreased.
- Expert mode increases amount of KR recieved from all attacks.
- Player healing now disabled in standard mode.

Bug fixes:
- Platforms now properly spawn offscreen when sliding into view.
- Diagonal and regular cutscene cross blaster attacks now refresh airdodge.

v2.1

Bug fixes:
- No longer sometimes take damage at the start of the first cutscene attack.
- Blue outline properly disappears after gravity attacks.

v2.0

The 'Blue Eye' update

Balance changes:
- Gaster blaster beam active hitboxes last a shorter time.
- Final Gaster blaster ring attack rotation speed decreased.
- Gaster blaster KR increased: 2 -> 3
- Beginning attack timings adjusted.

Bug fixes:
- Fixed a bug not allowing you to end the match if you beat Sans.
- Gravity bones disappear properly as soon as the attack ends.

Other:
- Added Sans visual portraits for gravity attacks. Sans will move to the side of the screen and perform his hand actions as seen in the original Undertale battle.
- The screen will shake when Sans performs a gravity attack.

v1.11

Bug fixes:
- Rolling into the trigger for the intro dialogue no longer removes your hurtbox.
- Being airborne during the starting trigger no longer keeps you airborne.

v1.10

Bug fixes:
- During tracker blaster attacks, blasters should no longer spawn offscreen or funnly behind HUD elements.

v1.9

Bug fixes:
- Players can no longer attack during the opening dialogue.
- Butterscotch Pie now fully heals players in multiplayer.

Other:
- Sans' gravity change attacks briefly give players a blue outline (visual only).
- Sans' shadow during opening cutscene moved downwards slightly.

v1.8

"more debug stuff left in aaaaaaaaaa"