Reactor - Atari 2600

Complete Atari 2600 Game Library (252 items)
list by Prelude

Atari 2600 (284 items)
list by diabolical dr voodoo

This is a tough game to describe. You control a small ship inside a reactor. Nuclear particles attack you and try to force you into the wall. You must do the same to them to survive. Meanwhile the core expands, shrinking the space you operate in. To stop the core from expanding, you can either knock out all of the particles, or knock some into each of the four control rods on a wall. I'm not sure if this has anything in common with real nuclear physics, but once you figure out how to play this, it can be quite challenging.