I really like the idea. In fact, my first thought was something along these lines, with the platform game being in the TV, but I didn't think I could pull off the effect in the allotted time, so well done. IMO the gas rises just a bit too fast, and is just a little too unforgiving. I like the music, but I personally would have it not restart from the beginning every single death, especially since the deaths are so quick and common. The player likely won't ever get to hear the entire track.
The smoke effect, the CRT bend on the corners of the game, visually it all looks really cool! This was neat!