Catloaf 2600

You control the movements of the feline bread product "Catloaf" as you navigate through various static hazards in the insidious labyrinth of the sinister Master Meatloaf, in which you've been imprisoned as the result of some unspecified internecine loafist dispute. Avoid traps (which will take one of five lives), collect the appropriate keys to unlock corresponding doors, and upon completing the game... play through again with bonus content unlocked!

The game embodies a certain retro, primitive visual and play aesthetic, hence the "2600" in its name.