You may have to press the green flag twice when you start. Because the sprites might not load in. A and S are goku's movement and D and F are his punch and kick and G is his Kamehameha with V being his instant transmission and C for his spirit bomb also X as back kick Left and Right arrow keys are vegeta's movement and J and K are his punch and kick and H is his final flash with L being his dash and N being his big bang attack
Goku is a little bit more OP for actual dragonball logic