Sine Mora is a side-scrolling shooting game dealing with time manipulation.
Metal Slug X
The Metal Slug games represent a high watermark for arcade side-scrolling shooter graphics, and the PlayStation port of X does not disappoint.
If you're interested in pure Galaga nostalgia, Galaga for mobile is a perfect port.
Metal Slug 3
Metal Slug 3 brings its signature run 'n' gun shooting action to Xbox LIVE Arcade.
In this frantic 2D action game, you are part of the Mercenary Kings, the most skilled team of warriors-for-hire on Earth, but when your comrades have fallen and the fearsome ...