Actually didn't finished it as I lose at Breakout... :-/ But I had somehow similar idea with my game as I can see :-)

On Mac OS X, I'm getting an error on startup:

Exception in thread "Display" java.lang.IllegalArgumentException: Width (0) and height (0) cannot be <= 0

I've pasted the stack trace into a gist here, if you're interested: https://gist.github.com/rhunter/155cbe454ceaad5859ed

I couldn't get past Pong!! Most games, I'd start off 0-2 (and went downhill from there) simply because my paddle wasn't fast enough to get to the ball. Didn't seem fair!! =) It seems to me the only way to score points on the AI was to get the ball going fast enough that he couldn't catch up with it, either. But most of my attempts to do so ended up in me missing the ball. I think it'd be more fun if the paddles moved a bit faster and if the AI made mistakes now and then.

Here's some good insight on the original Pong from "Racing the Beam" (and elsewhere): "Effective game AI needs to simulate good, 'intelligent' human behavior. But convincing AI also needs to simulate certain types of *unintelligent* human behavior, in the form of mistakes that make play more fun. The AI in the Robot Pong games does this by simulating both the correct placement of the paddle and the occasional imperfection inherent to a real human opponent."

You may have built this into your AI, but I didn't see it in the 5 minutes I played. The AI seemed to track the ball exactly and only "made a mistake" if the ball was moving too fast for it to keep up. Maybe that was your intention... to force the player to master the angled shot. I think, though, it would be more fun if you sped the paddles up a bit and allowed the AI to sometimes make a mistake.

Horrible collision detection and way to slow

simple and straightforward, not too innovative, besides the cool level transitions, but you can't go wrong with those timeless games, and for ten hours is actually a great acomplishment, well done

It's a a neat idea, though I feel like it would have been more interesting to integrate the new mechanics rather than replace them. That said, the pacing was unbearably slow. The player moved too slow, the game objects moved too slow, just everything felt like it was moving through honey. If you fixed that up a bit and add some more levels, this could be really awesome.

This game is really boring. Some rounds are impossible to win, the controls are too finicky, and it takes too long to get to the next stage after pong. Also, the graphics of the pieces sliding to the edges of the screen are extremely buggy. For only 10 hours of work, though, it's not bad.

simple game, simple to understand. A bit slow and clunky but I like the graphics and the style of it.

I can see what you're trying to do here, but I feel the excecution is lacking. Players shouldn't have to sit through five minutes of Pong and 10 minutes of Breakout just to get to Space Invaders. Also, your version of Space Invaders is missing it's most iconic feature, the lag that caused the spaceships to speed up as they were killed. Hopefully, with more work this could become a great monument to games of old, but currently it just serves to remind why those games aren't played anymore.