Role-playing game systems

The Marvel Multiverse Role-Playing Game (abbreviated MMRPG) is a tabletop role-playing game set in the Marvel Universe and designed by Matt Forbeck. Playable characters include Spider-Man, Black Panther, Captain America, Thor, Captain Marvel, Ms. Marvel, Wolverine, and Storm. Players can also create their own superheroes.

Ironsworn is an indie role-playing game written and self-published by Shawn Tomkin. Its Ironlands setting is low fantasy, set in a rugged frontier. Rob Wieland for Forbes named Ironsworn one of his favorite RPG products of 2022 and one of the best fantasy tabletop role-playing games for solo play.

The Gumshoe System (stylised as The GUMSHOE System) is a role-playing game system created in 2007 by Robin Laws, designed for running investigative scenarios. The premise is that investigative games are not about finding clues, they are about interpreting the clues that are found. The Gumshoe System is used in various games published by Pelgrane Press. As a result of the Hillfolk kickstarter, the SRD for the Gumshoe System has been made available for use under two open licenses: the Open Game License (OGL) and Creative Commons Attribution.

The Cortex Plus System is a toolkit RPG system that evolved from Margaret Weis Productions, Ltd's Cortex System. It has been used for four published games and one published preview to date, and the design principles are in the Cortex Plus Hacker's Guide, a book of advice in how to create new games using Cortex Plus, and list of new games produced via Kickstarter. According to the Hacker's Guide there are three basic 'flavors' of Cortex Plus; Action, Drama, and Heroic.

Powered by the Apocalypse (PbtA) is a tabletop role-playing game design framework developed by Meguey and Vincent Baker for the 2010 game Apocalypse World and later adapted for hundreds of other indie role-playing games.

High Adventure Role Playing (HARP) is a 2003 fantasy role-playing game, designed by Tim Dugger & Heike A. Kubasch, and published by Iron Crown Enterprises (ICE).

Now most commonly referred to as "Cortex Classic," the Cortex System is a generic RPG system based on the Sovereign Stone role-playing game system,, and was developed by Margaret Weis Productions, Ltd for the Serenity Role Playing Game. It was subsequently used for their licensed Battlestar Galactica and Supernatural RPGs, and brought out as a stand-alone system in the Cortex System Role Playing Game book (also called the Cortex Classic System Role Playing Game). Serenity, using the Cortex System, was the 2005 Origins Award Gamer's Choice Role Playing Game of the Year.

QAGS (Quick Ass Game System) is a generic tabletop roleplaying game. Setting for this system have varied and ranged widely.

Hollow Earth Expedition is a pulp fiction role-playing game published by Exile Game Studio in 2006 that is set in the fictitious Hollow Earth. The game was nominated for several industry awards.

Advanced Fighting Fantasy (AFF) is a British roleplaying game based on the Fighting Fantasy and Sorcery! gamebooks, first published in 1989. Just as the gamebooks, AFF is set in the world of Titan. A second edition of AFF was published in 2011.