Tried out a smaller game Assault cube a couple days ago after a friend showed it to me on his laptop. Its 19MB and a good time waster. While its not as complex or interesting, its a fast paced FPS that has 4 main weapons, an assault rifle, submachine gun, sniper, and shotgun, with a pistol and knife as side arms. Grenades can also be picked up as well as a double pistol. The game has a couple different maps with the ability to edit them. There are also a couple different play modes, two in single player, and a couple more in multi-player. You will usually only find capture the flag on multi-player however.
All in all the game was pretty good for its size. While its graphics arent that great, the gameplay is fun and is good for when you have little time to do something but want to at least play something.
http://assault.cubers.net/My rating: 7/10