Spiderverse Game
Yes, faserip.
Like smokin barrel said, all the books are free online.
It's a pretty simple mechanic: d100 and consult a table for everything. Unlike Marvel heroic, the are no reaction rolls, so resolution is a lot quicker. Chargen might be a bit quicker than Marvel heroic, and we'd be able to get a bit more distinction between characters.
If I was going to GM, I'd favor faserip.
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One more question, especially for original poster: would you want to restrict to canon characters, or allow originals. What about a mix?