>>10194260Mindstorms 1 ever since I saw a live demo. The contrast between huge gears and tiny spurs, the bulky grey motors with sliding rails, the inscrutable massive brain in yellow and black with metal-tipped studs. I was too young to join that robotics club and by the time I could I chickened out.
There were other big sets I liked but I knew I couldn't ask for, there's no retailer where I live and the sets I would get as gifts were 5-6 years outdated. That was until Bionicle and Knights Kingdom (II) became a hit and every toy store started stocking.