FlxInvaders
A simple invaders game in flixel originally created by Adam "Atomic" Saltsman. Link to the original GitHub repo. The source code is extremely well documented and thus very hepful for beginners.
Controls:
Left / right to move and spacebar to shoot.
Sound effects created with ChipTone
Music: Sauce-y Space by ninjamuffin99
Music Licensed under CC BY 3.0 (link to license)