Roughly LotFP-based, except race and class are separate, non-fighters progress (slowly) in combat, and magic is this system. Players are new to D&D or haven't played in a long time, so I'm keeping things simple. I'm compiling this for me, but hey, why not share?
1. 3d6 in order (Str, Dex, Con, Int, Wis, Cha); you may swap one. Then derive Power score (highest two of Int, Wis, Cha -28).
Ability Score Modifier
2. Choose race:
-Normal Human (no adjustments)
--Earthkin (+1 Con, -1 Dex, +1 on rolls related to Earth Elementals, LotFP Dwarf Architecture bonus)
--Airkin (+1 Dex, -1 Str or Con, +1 to rolls related to Air Elementals, 1/2 falling damage)
--Firekin (+1 Str or Cha, -1 Wis, +1 rolls w/Fire Elementals, 1 Dmg Resistance & +3 saves VS heat)
--Waterkin (+1 Wis or Dex, -1 Int or Str, +1 rolls w/Water Elementals, double breathing & movement in water)
--Tiefling (+1 Cha or Wis, -1 Cha or Wis, +1 rolls w/Demons/Devils, sense magic/spirits by concentrating 1 round and rolling under Int, +1 Stealth)
-IronGen (~7 ft tall steamwork automaton; +2 Str, +1 Con, -2 Dex, -1 Cha, -1 Pow, LotFP Dwarf encumberance bonus, +1 Int Check to repair self with other steamworks or generally operate them)
(more races will be available if PCs make friends with them as they adventure)
3. Choose Class:
-Barbarian (Zak's Random)
-Fighter (as LotFP; I may allow Zak's Random one later if people get antsy)
-Ranger (Zak's Random)
-Specialist (as LotFP but +half level to hit round down, or Zak's Random Rogue)
-Sorcerer/Witch (+one third level to hit IE +1 at level 3; edited to state cannot wear metal armor)
Class determines HP, Saves, level progression, etc, modified by race as above
4. Choose Equipment:
Everyone in the first session is starting as a teen (age 12+1d6) in a mining town near the edge of a steam powered magitek empire. People who start later will get more adventurey equipment options.
To start: Spend 1d6x10 SP in LotFP, GP in AD&D, or roll 1d20 below until you get the same number. You can reroll duplicates that are not the same number if you want (IE if you roll a 3, then a 5, you could reroll the 5).
2. hammer and 2d6 nails
6. leather apron and goggles +2 AC
7. sturdy hat or protective mask +1 AC
12. flint and steel
14. 10 foot pole
15. marbles or jacks
16. 25 ft rope
17. lantern +1d4 flasks of oil
19-20. 1 day's rations
EDIT: Then roll 1d10 on this table:
2. bow and 10 arrows
3. a ranged weapon that is not a bow
4. bolt gun and 2d4 bolts
5. bolt of cloth
6. jug of water
7. compass/pocketwatch combo
9. key to parent's Rouncer (a 10 ft tall two legged tank-like thing that fits 2 people. All weapons have been tripped from them in this setting, but they are useful for overland travel)
10. 1d4 jars of lard
I may use some tables to determine parent's occupation and resulting starting equipment or bonuses; if so I'll use the Hill Cantons Compendium or DCCRPG.