Space Panic (COLECOVISION CV)

A game remarkably similar to Lode Runner, you play as an astronaut with limited oxygen (time) being chased by various space aliens. Your only method of dealing with these multicolored threats from space is to dig a hole, lure it into a hole, then manually fill the hole with the alien in it. Dropping aliens on top of other aliens earns you extra points and eliminates both. Levels get progressively more difficult and enemies grow faster.