Looking for a good game? Try these! They need more players and they're pretty good!
Includes max playercounts per match, average number of players online if avaliable, and how the bots act if there are any.
Robot Roller-Derby Disco Dodgeball:
An FPS where you throw instakill dodgeballs at eachother and catch them. Excellent arcade mode as well. Also has a great announcer. MID-AIR CATCH! GODLIKE! YOU'RE ON FIRE!
0-20 players online (12-player max in a match). Bots are intelligent, but are restricted from doing certain things or to doing them only so often at lower difficulties.
Blockland:
You know this one. Try playing it once in a while, eh?
50-150 players online. Bots vary based on addons installed.
Retrovirus:
Not a well-known game, this is a six-degrees-of-freedom shooter with a campaign in co-op and singleplayer and in varying difficulties and a pretty standard 4-10(?) player VS mode. It also has time trials, of all things.
0 players online. 2 players max in co-op, 4-10 players in versus. No bots in co-op. Unknown whether there are bots in VS.
Suggestions to put on the list are welcome.