not much just W is up S is down SPACE is how you attack (close ranged) Z is for gaster skin (cost 100 muns) X is for Gaster 2 skin (cost 300 muns)
CREDITS: gaster made by toby fox (UnderTale) gaster 2 also made by TOBY FOX(undertale) trubbish Nintendo and Game Freak (Satoshi Tajiri POKEMON) ncs hope ( https://www.youtube.com/watch?v=EP625xQIGzs) sharaX Dark Darker yet Darker remix (https://www.youtube.com/watch?v=68wk6m05ojw) this was made by me because of a science project about DEFORESTATION (it was the worst) and I got bored and made . . . THIS . . .that's all NOTES: oh and yes I do like undertale and gaster was just in my mind when I made this game so have fun with some loud and fast music in a S L O W simple game one more thing this is my first game and it is simple so remix if you like :P Trubbish is more important then red men so attack him