Crazy Ballz mod for Half-Life 2

Crazy Ballz is a mod for Half-Life 2, where you are ?Balls? that roll through a full Singleplayer and Multiplayer mode. Take on the singleplayer version and solve puzzles and get to the end. Take on the multiplayer version and take on even harder Co-Op challenges OR fight to the death in a Deathmatch and TeamDeathmatch mode. This will be especially fun on a LAN as you can laugh at the fustration on peoples faces as the make a wrong move, resulting in them having to start at the beginning after all their work! So what is the Singleplayer version? In Singleplayer we have Timetrial mode and Survival mode. In Timetrial you fight against complex puzzels and attempt to get under the time limit. If you go over you lose. In Survival mode you evade waves and waves of obstacles coming right for you. So what is Multiplayer like? In Muliplayer you take on complex puzzles with your friends and just like Timetrial you try to get everything done as fast as possible. You can also take on Survival in Multiplayer...