From GameBrew - a wiki dedicated to Video Game Homebrew.
Gravity Shifter is an adaption of Mario series from NES for the NDS. This homebrew is made with DS Game Maker.
Collect all the coins that are scattered around two levels, avoid dangers that will cost your lives.
D-Pad - Move Mario
A - Jump
Tested on FlashCard DSTT/TTDS with Firmware 1.17a12.