I'm going to be dating myself here, but how about
DC Heroes RPG?It has a long and storied history and has survived 30 years with a still active fan base for an out of print game. I know it because I used to be the list admin for it back in the 1990s.
In a nutshell, the scale for attributes is logarithmic, so each number is twice as "powerful" as the one before it. If 0 is 100 lbs., then 1 is 200 lbs. and 2 is 400 lbs, etc. You can have Jimmy Olsen's Strength at 1 (lift 200 lbs) and Superman at 25 (lift 1677721
tons!). You roll 2d10 to perform an action and use a chart comparing the active value vs. the defensive value. There's tons of powers and the ability to customize them easily.
It supports mutiple genres from Captain Carrot and his Amazing Zoo Crew to Watchemen by changing some basic rules in the game regarding falling, knockback, blood loss, boosting attacks/damage; it's built right in.
There's a mailing list now if you want more information:
https://groups.yahoo.com/neo/groups/dc-heroes/info It was a while ago, but the owners of Blood of Heroes had a stack of copies they could sell directly. There's also used game stores. Also, there's a huge site of writeups for characters from
Mass Effect to the
Hostess adverts villainsIt tends to work best as a supers game, so street level heroes will end with very similar stats. You can break this apart if you change the logarithmic scale from 2 to 1.5; this will give you more space on the low end to differentiate between characters. High end character are still possible, but they'll get some larger numbers. For example, Superman has Strength 42 under this system, not that it really matters).
Anyways, great system, lots of fun, just enough detail to make it interesting without getting bogged down.
Oh! And Gadgets are a part of the game that works quite well. You can do Blue Beetle or Iron Man, no problem. There's the concept of an "Omni-gadget" for those times a hero pulls something weird from their utility belt. They're limited to one use and a certain rating, but it allows for those moments where the hero is perfectly prepared. There's rituals and magic powers, as well.
Fantastic system!