Cool little synth intro, and I like the laugh sample. I would actually take out that hit immediately following though, I think just the first elements are enough.

I like the kick and snares, though I'm going to be nitpicky - I wish the kick was louder, and the snares have just a touch too much reverb right when they come in. As other elements are added it's just fine, but maybe gradually build it up instead of just dropping it right in.

Holy cow I love the melody, especially when it really comes out at 0:42. What synthesizer did you use for that lead? It's really really well done. And when the bass comes in...man this track is really nice.

The drop at 1:30 is cool, but some of the effects seem overprocessed. One synth in particular that comes in at 1:33 has way too much reverb on it, and drowns out the other elements.

Really great ideas and elements so far though man. I'd like to hear some more low/mid range, but I love the Mario samples and the general vibe to this track is great.