Woah. Incredible game. I've never been so entertained with a shooting game before. Progress feels good, difficulty curve is just right. And you really get a thrill on the last minute of a boss-level. Winning feels great, playing feels great, and losing just motivates you further. 5/5. Awesome.
Perfect. 5/5. All that needs is multiplayer. 2 breakouts on the sides, a pong game in the middle. Have the two games interact in some way. I finish a level in breakout gives me a larger paddle in pong until my opponent clears his level too. I lose a live in breakout shortens my paddle in pong, or actually counts as a life lost. The focus is the pong battle, but you have to keep the breakout going to level up and keep in with upgrades in the pong battle. How's that? Could be hotseat, with one player using the keyboard and one using the mouse. Or online. Good luck.