Purrrification

Purrrification is a game with creepy story behind. I received this game on an old floppy disk along with a letter with some information about it. Some self-declared Developer made this game in the late '80s and send me that build to make a HTML adaptation. Here the weird thing: The game is full of creepy glitches. Some times strange creatures appear on the screen, other times the game seems to freeze, and... No, I prefer that you, dear player, discover all the strange stuff that happens in this game. Are you brave enough to beat this cursed game?