If you want a world to put your dungeon in, you could use my Random Map Generator.
A lot of the ideas in the dungeon generator come from my collection of random tables.
Tunnels & Trolls is a pen-and-paper role-playing game that's been around since the 70s. The main attraction of it is that it's very easy, unlike Dungeons & Dragons and other similar games. There's a free set of cut-down rules at freedungeons.com. The main things that are in this generator, and aren't in the rules there, are:
A lot of people use an extra attribute, called Wizardry (or WIZ), which is reduced when you cast spells (Strength is used this way in the freedungeons rules).
You can count Speed towards your Combat Adds in the same way that Strength, Dexterity and Luck are counted. If you use this rule, you might also want to let characters increase their SPD (by the new level number) when they gain a level.
As well as Warriors and Wizards, there are Rogues. Rogues aren't thieves (as in a lot of games). Instead, they're halfway between Warriors and Wizards. They can use any weapon like Warriors, but they don't get the Warrior's bonus for armour. They can learn spells, but they don't start knowing all the first level spells like Wizards do. They also can't automatically buy spells - they have to find them during their adventures.
As well as humans, dwarves, elves and hobbits, you can be a fairy or a leprechaun.
Fairies change their attributes as follows: STR x 1/4, LK x 3/2, CON x 1/4, DEX x 3/2.
Leprechauns change their attributes as follows: STR x 1/2, CON x 3/2, DEX x 3/2.
Fairies can fly, if their equipment weighs less than half of their Weight Possible.
Leprechauns have to be Wizards - but, like Rogues, they can't buy spells automatically. They start knowing the spell Wink-Wing, and it only 'costs' them 5 WIZ points (or 5 STR, if you're not using WIZ).
Spite Damage: fights where both sides are heavily armoured can end in stalemate. Spite Damage is designed to get around this. When characters are fighting hand-to-hand, each 6 rolled (by either side) counts as an extra point of damage, which isn't reduced by armour. Hit Point Totals are still compared in the normal way.
The main places on the internet where people talk about Tunnels & Trolls seem to be the Trollbridge forum, and the Radio Free Trollworld email list. I'm on Trollbridge, so if you want to ask me a question you can do it via that.
You can buy the rules, which have some extra equipment and spells etc, from Flying Buffalo Inc. (also known as FBI). Another site that sells Tunnels & Trolls stuff is Outlaw Press.
Tunnels & Trolls is by Ken St Andre, with editing by Liz Danforth. The misfire table for pistols, the rules for bullwhips, and some of the standard creatures, are adapted from material by Toad-Killer-Dog from Trollbridge. Some extra equipment by Outlaw Press. Some jewels taken from a list by mahrundl from Trollbridge. The 'Eyes' are inspired by those in M.A.R. Barker's Tekumel. Magic of Odand adapted, with permission, from Eldritch Weirdness by Matthew J. Finch (originally written for Dungeons & Dragons). Everything else by Age of Fable.
