Second place for me would have to go to #DreamPod9's #HeavyGear setting. Again, this is a vast setting where you can have all kinds of adventures despite the focus on mecha in the form of Striders and the titular Heavy Gears.

I'm gonna add my two cents to the list of #TTRPG rules and settings out there that don't rely on some variation of the d20 System.

#EdenStudios has several #Horror and #DarkFantasy games including #AllFleshMustBeEaten , the #WitchCraftRPG, #GhostsOfAlbion and the #ArmageddonRPG, plus the hidden gem of Ape-themed RPGs, #TerraPrimate

#DreamPod9 is about to relaunch the #HeavyGear RPG to supplement its tabletop wargame of the same name.

#StrangeMachineGames now publishes #Robotech, too.