Are there any rules (house or otherwise) for increasing ability scores in Basic D&D or any of it's retro clones? (Other than magic items or wishes.)
In early D&D, both chainmail and plate armor were considered metal armor, and to slow the wearer to 60' per turn. Chainmail cost 40gp, and plate armor 60gp. Their encumbrance was 400 or 500 coins ...
A staple of of early D&D is the "1 in 6" or "2 in 6" chance for surprise, finding secret doors, and so on. Recently, some of the retro-clones, mostly noticeably Lamentations of the Flame Princess ...