Njam - The most addictive PAC-MAN clone
Flappux - HTML based clone of Flappy Birds that is unapologetically free software.
Pyroman: Jaws of Fire - A Pac-Man like game.
Flying 2048 - Flying 2048... quite possibly the most "addicting" game in the world.
Pac-Bar - Open-source Pac-Man for the MacBook Pro Touch Bar
Flappy Bird Online - Play the Original Flappy Bird Game Online.