They're entirely different games I have to say. Raze (and Raze 2) seems to be a singleplayer game that works like a multiplayer game (the missions are always based off multiplayer modes) and you can square off against (and play with) computer AI in Quick Matches when you're done with singleplayer.
Plazma Burst is basically an ordinary game except that the projectiles seem to have force on any character, there are more human enemies than alien enemies, the human enemies' screams are funny and the game can seem impossible at some points. And when you're done with singleplayer, you can play mulitplayer with other human players I think (in the second game) and play on custom maps (also on second game), but you have to input a code (for the map) in order to play one.
But I can't seem to tell how I'm supposed to choose between the two.
