Great stuff, very nice arrangement and mix and playing and choice of games. More Zelda music is always a plus though I missed the classic Mario tune, Tetris however was perfect. The only thing I would try to change is improving the electric guitar rhythm (and sometimes solo) tooone. But I know how hard it can be recording distorted guitar just the way you want to or at least halfway close to the way it sounds to your ears.
If you ever do another project like this, don't forget to post it!
Greetings...
Nef