Powerpig by genecyst is a puzzle-platformer for GBA. You are armed with a gravity gun, which gives you the possibility to carry on your shoulders anything you find. This gun is powered by coins. In the up left corner, coloured in green you got the gun charge, collect coins before it runs out of energy if you want to stay alive.

Powerpig GBA - AREA 1 - levels 1 - 7