Within OGL/d20 SRD guidelines and retro clone precedents that have gone before, the authour of Dark Dungeons has taken a very brave step and incorporated many, if not all, of the rules from the D&D Basic, Expert, Companion, Masters and Immortals sets from the 1980s/90s. (possibly similar to the Rules Cyclopedia which I've never seen myself)
In Companion and Masters there are many rules which should be applied at the start of a campaign, such as progressive weapon skills and damage, extra armour and equipment and so forth, not to mention high level play.
I've only read a few pages, but I thought I should share the fun.
The author of Dark Dungeon was asking for designs for character sheets. I was going to post my submission to his blog - but he's changed that. And tonight I'm The Piazza forums aren't loading. So I'm stuck with this character sheet and nowhere to post it.
So I thinks, let's post it on LatD and then at least I'll get closure for the night.
The character sheet can be adapted to other forms of Basic style D&D.
The weapons art is from the game - the author is pretty specific about the look of the rules.
Some of the hand drawn boxes are hideously stretched but I rather like the sort of rough letra-set quality to the sheet. ;)
For those that are interested, retro-D&D-clone Dark Dungeons is back on Lulu in it's second printing. I've actually ordered a hard back, which is very unlike me, but I've never owned a copy of the D&D Rules Cyclopedia (although I do I have the BECMI box sets which have similar content), since it's a whopping 344 pages I thought perhaps the hard cover would make it more manageable.