This is a free game kind of like Street Fighter, only a cheap knock-off version. The game combines the style of Street Fighter with the attributes of Dragon Ball Z. It's pretty fun, and there are many variations of the game. There is also an online play feature. (Connect via IP).

LF2 official site:
http://www.lf2.net/

LF2 downloads:
http://lf2-global.com/downloads/downloads.asp?id=1/