Moom - Move your mouse over the green zoom button in any window, and Moom's mouse control overlay will appear (as seen in the above animation).
Star Defender 4 - Star Defender 4 is an Arcade, Action, Vertical-scroll, Shoot ‘em up, and Single-player video game created by Awem.
Hammerspoon - This is a tool for powerful automation of OS X.
XenoRaptor - XenoRaptor is a Space, Action-Adventure, Shoot-em-up and Single-player video game developed by Peter Cleary.
Spectacle App - Move and resize windows with ease.
Galaga - Galaga is a 1981 superb Shoot ‘em up, Action, Single-player, and Arcade video game created by Bandai Namco Studios Inc.