Halo Zero is a fun fan based game.

User Rating: 8.5 | Halo Zero PC
The game is fun for a while. The default control setup isnt very good and the response time for some actions (like grabbing another gun) were rather poor. Overall though, this is a good game as far as fan-based games go but if you have any of the other Halo games you arent missing much by not playing this game. The single player mode was actually fun but was too short. I beat the whole game in about 30 minutes.
The multiplayer is quite pointless as well seeing as how you have to enter an IP to jon a game. But if you'r computer has integrated graphics or you dont have any other Halo games yet or just like 2-D games with somewhat laggy controls then this is a pretty good game.