yea chainmail!, lol I used to play D&D when I was super young, then AD&D and 2nd edition, I've played alot of different table top games especially old battletech, still do play more "complex" board games like avalon hill wargames(anyone know of Up Front? lol)
I still have rulebooks for 1st, 2nd, alot of battletech and a whole bunch of old dungeons and dragons metal figurines(the kind they don't make anymore, like hundreds and about every "major" kind of chromatic/metal dragons), when we played D+D we'd always use the miniature rules for combat so you could have stuff like getting hit by an allied mages fireball, line of sight, better flanking etc.