Underswap Gaster Battle- Genocide Arrow Keys- Move Z-Select/Attack X-Back Spare Gaster 10 times to win! Join Scratchtale! https://scratch.mit.edu/studios/2269718/projects/ Let me know what you want next! This is meant to be hard!
Made using the Undertale Simple Battle Creator by pococikapusta Blueberry Sans YT Channel: https://www.youtube.com/channel/UCLQRS_8k6DGeEQi-dQXxnaQ UPDATES 1.0- First Version! 1.1- You deal less damage. 1.2- Gaster has KR on one move only. 1.3- New item added. 1.4- Replaced one item with weapon. 1.5- Fixed KR. 1.6- You can now spare him after 10 acts. 1.7- No invincibility frames. 1.8- Faster bone tunnel. 1.9- Changed to Genocide. 2.0- Added Gaster's voice. 2.1- Changed weapon to Real Knife, and changed Defense. 2.2- Changed up items a little.
