This is a very, very old alpha version of the game, from about a year and a half ago. The game was actually just released on Steam last week, and besides massive visual and performance improvements it has things like bot customization, team selection, and a bunch of more levels and modes.
There is also a free singleplayer demo there as well.
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 "Disco Dodgeball"){kind=icon}
 "The Very Organized Thief"){kind=icon}
 "Tale of Scale"){kind=icon}
This is a very, very old alpha version of the game, from about a year and a half ago. The game was actually just released on Steam last week, and besides massive visual and performance improvements it has things like bot customization, team selection, and a bunch of more levels and modes. There is also a free singleplayer demo there as well.