It's almost a waste of time even reading a review for a modern game this bad.

User Rating: 3.2 | Space Raiders GC
First off I have to tell you:

This game has NOTHING to do with the real Space Invaders games.

It plays a little like it. I mean very little like it, and that is about it. The game opens with a promising CG sequence introducing the three playable characters and after that sequence ends you can turn off this game and take it back to Blockbuster Video and tell them it didn't work, can I get store credit or trade it.
Yeah it's that bad.
Not as bad as Spawn: Armageddon but close.
So save yourself some pain. If you see it on sale for 1.00. Leave it. It isn't worth it.