I think it's a super cool concept. Tetris, Frogger(minus a weird bug where you go off the play area), Space Invaders, and Pac-Man were really well done. I think you've done a really good job recreating the games. It sounds like the music and some sound effects are from the original games. I could be wrong, but it definitely sounded like it.
Really cool recreations, and each title is pretty darn impressive.