If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Spacebar to jump.
Shift to shoot rockets.
Pick between a quick race or a tournament, then choose the buggy you like the best. Get ready on the starting line and then race against the other opponents to the finishing line! It has fun movement with a jumping feature which is great and you can collect rockets to shoot at your kart foes ha-ha! Have fun!