Super Mario Galaxy 2 – Cheats – Infinite Lives
Go to the “Supermassive Galaxy”. There are 3 Koopa Troopas in a cylindrical area. Then run to the right and a make a long jump to land over the giant Koopas shell, and gradually keep right (you can release A button). You´ll get unlimited extra lives for free!
Another way to get infinite lives in the “Huge Trouble With Big Wigglers” level in Supermassive Galaxy is by going to the 1UP Mushroom floating above the gap between the “Tip Network TV” block and the next block. Long Jump over this gap to collect the 1UP, and then Long Jump back and speak to the TV. The TV will show you how to perform the Long Jump through a short “Tip Network” video. Once the video is finished, the 1UP mushroom will appear again. Collect the 1UP, and talk to the TV, it the 1UP will appear again. Repeat this as many times as desired.