Ok, ok. It's on brand, so. 1) MechWarrior 2) Shadowrun 3) Rifts (one session, still counts!) 4) AD&D, 2e 5) Champions (HERO System; we used it for homebrew Time Cops) 1 and 2 might be reversed, I'm not sure. And I made characters for AD&D long before I ever got to play it.
ok, I'll play this one. My 1st five ttrpgs in the order I played them: 1. D&D 2nd edition ("AD&D", high school) 2. Call of Cthulhu (high school) 3. Car Wars (1 game, high school) 4. Vampire the Masquerade (20s/30s) 5. Daggerheart (this year) (not including D&D 5e, it's like returning)