This review contains SPOILERS!
Overall, I really enjoyed this game. It took a great concept from the comics and stretched it into a full experience that I really liked. Love the different games you choose and the things you took away from them.
The music is very well chosen--loved the classical stuff in here. My favorite was the "loading" level with Hall of the Mountain King--the fact that the people stop throwing spears at you when the music stops was chilling, almost. And the twist that the person who wanted to punish you is your old gaming controller is genius! I do wish that the grammar in this game was better--it really hindered the dialogue and the experience (btw, who was the blue person at the end?). And the Mario level, when played in full at the end, is pretty difficult to maneuver; the controls don't feel smooth enough at all.
But those are rather minor complaints--this game is overall well designed and done quite well (and I must congratulate you for recreating Mario 1-1 with a nice pen and paper style). Nice job!