Blaster Powerups on First Level
destroy all the scorpions that come out of the first rock in the level. After you do this, a blaster power up will apear; repeat this process on the 8th
rock but instead of scorpions, it will be womprats.
On the Tusken Raider level, make your way to the place where you have to jump on the falling rocks. Let yourself fall off the cliff and you will enter a little cove filled with extra lives. Get them all, then kill yourself to leave. Repeat as needed.
At any time during the game hold A + B + X + Y, while pressing START. If you enter and exit the Sound Test screen several times it will give you clues for other cheat codes.