Bomboy

Bomboy, or Bomb Boy, is an action game starring the titular character, a small mutant boy who was born underground. You must reach the exit in each level. He wishes to escape to the overworld, but there are a lot of enemies in his way.

You have a limited number of bombs to use to destroy enemies or dig tunnels. Sometimes the exit is hidden and needs to be dug out, or a certain number of enemies must be destroyed.

The game was distributed as shareware. The registered version unlocks the ? bomb, as well as a save feature and more levels.