Space Panic

Space Panic is a platform game from Universal

This game is often cited as the original platform game. You control an astronaut who ventures through caverns beneath a planet. To fight the aliens dig holes in the platforms and then lure them into, then hit them with your astro-shovel to knock them out of the hole and off the screen. In later levels, two or more holes must be lined up vertically in order to dispose of the aliens. There is also a limited supply of oxygen.