Does anyone play this system? I started looking at it because I want a good system for super-heroes that isn't over complicated but also isn't too simple. It seems like it will work pretty well.
I haven't actually played it, but I do own the Big Gold Book and quite like the rules. For an RPG its very plug and play, and can work well with other iterations of BRP (Such as Call of Cthulhu, Stormbringer, ElfQuest, Ringworld) and RuneQuest (including Mongoose's RuneQuest rules). I think the supers rules would work well if you're into d100 games. Otherwise, I would seriously check out Green Ronin's DC Aventures, which uses the same rules as the upcoming third edition of Mutants and Masterminds. Its very streamlined, and about as good as new school Pen and Paper roleplay gets.
I used to play a lot of Call of Cthulhu (which is a Basic Role Playing variant), always as a game master- probably my all-time favorite pnp rpg. I own several of the other Basic Role Playing variants- Superworld, Ringworld, one of the later (but not the latest) editions of Runequest, and Pendragon, which isn't quite Basic Role Playing, but is partly-sorta-kinda based on it. I'm less familiar with more recent stuff (except for recent Call of Cthulhu stuff, which I've kept up on to some extant), but my take, overall:
I have a general fondness for the system, at least as it used to exist, which I think is very versatile- I enjoy, for example, the ease with which npc races in various games can be transformed into player character races, I like the sense of character physicality created by the SIZE attribute (and amplified in some versions of some games by hit location systems), I like the simplicity of the percentile dice roles (though that's made a bit more complicated in some games), and I like the fact that there are different magic systems in different games, to better fit different game worlds. On the other hand, there are some problems, both with the system overall (in particular, many people don't like the way it's difficult to develop actually POWERFUL characters in most- though not all- games), and with individual games ( I HATE both the character creation system and the magic system in the version of Runequest I have, for example).
Specifically with regard to superheroes- Superworld, originally part of a game called something like Worlds of Adventure, but spun off into its own game, was the original Basic Role Playing superhero game. It's kind of like Basic Role Playing blended with the HERO system- the creators of the game clearly liked the point-based system in Champions. (I heard a rumor that it was also the game that the Wild Cards book series grew out of- not sure if that's true, though.) There are things I really like about the game, but it definitely has its problems, mostly because Basic Role Playing and HERO system aren't really such a good fit. It did a very good job, with only one expansion, of allowing you to create of recreate pretty much any super power you could think of, though, and the actual game play with fun. I have no idea what the current Basic Role Playing superhero rules are like, though, or whether or not they're in any way derived from Superworld, so I don't know how helpful this is.
The Big Gold Book (Basic Roleplaying latest edition) pretty much has the Superworld rules rolled into it as one of the power systems. Hence why I called it plug and play. The latest iteration makes it to you can pick the rules you use, so its basically a universal system now.