I've often thought about stripping down an OSR styled ruleset to it's very essence, in an attempt to get it to as few pages as possible.
+Brent Newhall has gotten it down to a single sheet of paper with
Dungeon Delvers, and I'm impressed. A few d6 and a single sheet of paper and you can experience some old school gaming. Will it be as complete as S&W, LL or one of the others? No, of course not. It would make for an excellent game to run at a convention tho' - print out a half dozen copies of the rules, provide some d6s and you are ready to go.
It's priced as Pay What You Want - so you can grab it for free and then throw a few coppers in the virtual RPGNow tip jar if you find it valuable.
At some point I'll need to run a playtest session to see how this works in actual play, not just in quick read, but it looks playable and the price is certainly right.
From the blurb:
Dungeon Delvers is an ultra-portable one-page D&D variant.
Dungeon Delvers packs a lot into one page: rules for attacks and saves, 4 classes, 3 races, spells, healing, conditions, and monsters. The system uses only a d6. There'll even be a rock-paper-scissors system for rolling a d6!
Here's what you'll get:
A two-page PDF containing the rules on one page, and an expanded spell list on the second page. The spell list includes spells for wizards and clerics levels 1 through 3 (that's a lot of play time).
A one-page PocketMod PDF of the rules that can be printed and folded into a booklet that will fit in your pocket.
An .azw3 file containing the rules and expanded spell list, for use on newer Kindles.
A .mobi file containing the rules and expanded spell list, for use on older Kindles.
An .epub file containing the rules and expanded spell list, for use on iPads and other eReaders.
The System
All rolls are 1d6. Roll 1d6 each for the 6 classic abilities. Attack rolls succeed on 5-6. All other rolls are ability rolls, which succeed if they roll less than or equal to the relevant ability. Ability rolls are used both as skill checks and as saves.
Fighters deal extra hits per level, rogues get a bonus on ability rolls, wizards get one spell per level to use at-will, and clerics can cast any one spell of their choice once per day (more at higher levels).