RPG Systems

Seems like the biggest "question" these days is rules-heavy or rules-lite? Rules-lite, here.
"Over the Edge" and "octaNe" are great examples of rules-lite RPGs that require cooperative story telling on the part of all involved.

"Zombi: The Earth Won't Hold the Dead" is an somewhat obscure RPG from Ireland that is now out of print (they turn up on eBay every now and again, however). This little gem is rules-lite, but has a fairly extensive barter section wherein prices are listed in terms of "cans of food". Or "tins", actually. It was written in Ireland, after all.

"Tri-Stat" isn't bad either, nor is "Unisystem" (both Classic and Cinematic versions).

What we're playing here these days:

"All Flesh Must Be Eaten" (Eden Studios' Zombie Survival Horror RPG - Unisystem Classic)

"Classic Traveller: the Spinward Marches" (GDW)

"Empire of the Petal Throne" (homebrew, "Over the Edge" conversion and Tri-Stat "Tekumel" rulebook depending on what we're feeling like.

Oh, if you don't know what an RPG is, I really can't help you. It has nothing to do with a rocket-propelled grenade in this case, and you're probably thinking I'm a freak by now. Which I probably am, but that's another topic.

TZ