Aftershock is a cancelled shoot ’em up that was in development by Sega Midwest for the 32X. A short video (just a couple of seconds) of the game was seen in the episode #70 of the ROX TV Show, when they visited the SM studio. As we can read from a GDRI interview with Jim Reichert, former Sega Midwest designer, the project was canned because of economic problems:
JR: Aftershock got beyond the proof of concept stage, and we were developing the game when I left. I remember that Aftershock got rave reviews as a product pitch at SOA, but by that time, Sega Midwest had pissed away so much money (with little ROI [return on investment]) that nobody trusted them with SOA cash — and Sega itself was totally floundering (32X?!?). It was too bad because that game actually had some legs, and the whole studio was excited about it — and I was the lead designer. I still have all the videos and game assets associated with it — I even have a cartridge with the prototype on it. We had a professional cartooner design all the characters for the game, and the images were completely awesome.
JR: Essentially, it was Jungle Strike set in a post-apocalyptic world where you could fly, drive, and cycle around.