Wowwee Zowwee!
This shit is fucking entertaining! The movements are near perfect! This is real fun! If you can somehow program a CPU player for single-player purposes, this would kick ass to the extreme... I would give you a solid 5 everyday for a whole week if you made it more violent (with blood and gore)... in a more complicated scenario. I found a little glitch though... when both kangaroos are at the very end of their health bar, and you hit each other simultaneously... no kangaroo will die, in fact.. both of them start "dancin" victoriously! Even though that was kinda funny... you should fix this... like have them both fall down or something :)