Colossus

The colossal nightmare beast has descended onto earth. Your only chance is your acid suit and your electric zapper. Couragely you jump into its mouth and make for its eyes and heart. Destroy all three and return to the mouth to exit!

This is a C64 game, so behold the retro goodness! Control is via Joystick in Port 2. Press fire to start game. Move and fire about. Press M to display the map.