RPG is either 1. Rocket-Propelled Grenade or 2. Role Playing Game. In that meme, they're taking a Rocket-Propelled Grenade and putting it in types of Role Playing Games, like JRPG=Japanese Role-Playing Game, Tactical RPG= Tactical RPG like the games you move on a grid, MMORPG because anytime you try to make a name the thing is taken and you have to add 13123432942349234 to the end Text based is some of the old stuff kinda like old-school D&D on the computer etc.
