innerdude
Legend
The Burning Wheel, Savage Worlds and Gurps eludes me. I've read everything I could on them and although I see the value, I'm not really convinced.
But Mouse Guard I will have to try one-day, hopefully as a player, not a DM/GM.![]()
I own all three rules sets (Burning Wheel, Savage Worlds, GURPS), and have actively played GURPS and Savage. If none of those three are floating your boat, I'm not sure what to add at this point.
Savage Worlds would fantastically emulate what @gamerprinter talked about if you used the Beasts and Barbarians campaign setting. But Savage Worlds is admittedly (and purposefully) not extremely "crunch heavy." It's definitely rules-medium, or a step down in terms of rules complexity from D&D 3.x / PF, and probably a step and a half down in complexity from GURPS. Savage is perfect if you're interested in fast combats, with some fun, streamlined tactical gameplay (though not nearly as in-depth as D&D 3 or 4). Out of combat it supports a more "free-wheeling," improvisational style where your players can "go off the rails" in terms of trying fun stuff in-game. If this is what you're looking for, Savage Worlds is the perfect fit. And frankly, in spite of there being meta-game and gamist artifacts poking up all over the place, it actually feels more "simulationist" in play than D&D. But if you're looking for "hard," detailed, crunchy combats using multiple subsystems, it's definitely not the right fit.
GURPS takes hard, detailed, crunchy combat to the next level. GURPS and Runequest are generally regarded among the most detailed, "realistic" RPG combat systems, though I personally have never really cared for GURPS' overall style and vibe.
I can't comment on HERO, having never read or played it, though from most of what I've heard, HERO and GURPS bear a number of similarities. If the general vibe of GURPS isn't working for you, then I don't know that HERO will be what you're looking for either. @Dannyalcatraz might be your best resource for getting info on HERO.
Burning Wheel is crunchy, but the crunch serves a totally different purpose than GURPS. It's trying to generate a character "narrative" tone, and not necessarily provide crunchy combat. Its combat system is more abstract, though I've only read through the rules and haven't seen it in play.
If none of those three seem to feel right for what you're looking for, I'd probably suggest looking at Runequest, Harnmaster, or EABA ("End All, Be All"). A low-level game of True20, or the D&D 3.x "E6" variant might also work.