[Simlasa]

I don't know how relevant it is but...
The old Whispering Vault game sometimes gets described as being an odd sort of superhero game...
In the game the heroes each had powers and alliances that could help with the overall goal... but there were also powers that only functioned for the group as a whole... some of those were automatic... others required active participation to pull off. There was also something of a building up of group experience... as they worked together, and got to know each other better, new powers for the group became available.

I don't know that I've seen that sort of thing in other games... or maybe it's common and I just keep missing it.