Mega Man
The original Mega Man for NES now on iOS and Android
3 Alternatives To Mega Man
Cobalt
CAD and 3D modeling software for Mac and Windows.
Expendabros
Expendabros is an epic amalgamation of all the wonderful elements such as Action, Run and Gun, Side-Scrolling and Platform etc.
Metal Slug
The definitive, side-scrolling bullet hell platformer.