BREAKSOUT was written in JavaScript/HTML5 using the Phaser game framework. Sounds were created in bfxr and music was created in Bosca Ceoil. BREAKSOUT is doing its best to be touch-based mobile-friendly, but your mileage may vary.
BREAKSOUT has been very elegantly covered by Kill Screen, Rock, Paper, Shotgun, FreeIndieGa.me, Superlevel, Geek Squad, L’Oujevipo, and Forest Ambassador. See also this nice writing from CatCubed.