Great 8 dollar game. Solid single player and amazing multilayer.
Gameplay:
If you could image fusing the NES game Marble madness with a chaotic shooter such as Team Fortress 2 then it would come out as Madball. There are 2 factions each with 5-6 characters. Each character has 2 unique specials ranging from assist such as healing to a assault special such as bombs etc. Besides the characters, there are a nice array of weapons at your disposal. Shotguns, duel barrel machine guns, mortars, lasers, etc etc are all included with each weapon having a primary and secondary function. For instance, the laser beam gun has a secondary fire that shoots 5-6 missiles. These weapons also follow a 4 primary powers. A rock paper scissor approach is made where your attack might take less or more depending if the person you are fighting is immune to one of these powers.
Graphics:
The graphics hold up quit well from 360 to PC. Bomb plumes and splatter look really nice. If you on a decent machine you should be able to play with every option turned on max without having any lag.
Multiplayer:
The multiplayer has all the classics. Capture the flag, team deathwatch, Destroy the base, and Free for all are all here. A extra option is the invasion mode. This mode allows all players to choose a a particular square piece of map and place it where they will like. After all pieces are placed, a team vote ensues where they pick where to place there flag. Its a really nice touch to the game
Overall:
This is one of the best indie games I've played. You get alot of gameplay and value for only spending 8 dollars.
If you would like to see some gameplay action then check out this youtube video
http://www.youtube.com/watch?v=_bGwepjg05E