I haven't played Marvel Superhero in >10 years but am running this weekend!
There is a Free version of MSH called Phase 4. I *almost* went with it, but the amount of MSH material made MSH easier, and also I don't like Phase 4's Universal Table replacement.
I might use Phase 4 in the future if I ever have a one-off superhero game.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!