Plotypus is a
collaborative storytelling game; it enables any group to tell an epic story with a riveting plot. Players draw setting and character cards for inspiration and narrate the story through eight pivotal chapters.
The game is best with 2-5 players but works with any group size. Duration depends on personal preference and ranges from 15 – 45 minutes. Plotypus is appropriate for all ages
Exosolar is a free rpg
about robots struggling to survive on an alien planet. Players will have to make the most of their limited resources as they overcome obstacles that threaten their mission. This is a rulesÂlight RPG with a focus on narrative. One player is the GM (game master) and controls the world while the other players are the robots.
Hackers and Hustlers is a free RPG designed as a “high tech farce.” The author writes:
It is the very near future. You are coworkers and roommates: running a startup out of an old Victorian in San Francisco, where you also live. Your founders went to Burning Man and refused to return. Malicious forces are at work.
Microlite 20 is a set of minimalist RPG rules designed for compatibility with Old School Dungeons and Dragons materials, as well as the d20 OGL. Fourteen free Microlite 20 variants are available at the link.
Alienstar is a free science fiction role playing game. It is generic and designed to let you play out your favorite science fiction movie settings.