Marvel 2099: One Nation Under Doom was a cancelled game for the PlayStation developed by Mindscape Inc. It was to be loosely based on the "One Nation Under Doom" storyline in Marvel's Doom 2099 comic. It was envisioned as a 2D side-scroller with 3D rendered characters.
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There's an alternate universe where instead of the MCU we got a video game shared Marvel universe that made more liberal use of the source material's wackier(read: cooler) aspects, which is what this game is in my imagination