This is the core ruleset for the Eros RPG System. Originally created along with Eros 433, a science fiction game about exploring inexplicably Earth-like planets in the Alpha Centauri system, it is designed from the ground up to work well with most game genres without having to change the core game mechanic. Each setting sourcebook contains a campaign setting, genre-specific equipment, and any necessary supernatural power rules. Simply grab one (or write your own!), then get playing!

Eros 433 is a science fiction RPG currently in development about colonizing uninhabited nearby worlds: Ride a 30km wide asteroid at near the speed of light, find out what happened to the first wave of colonists, then continue their mission.

Genres: hard SF, mecha, relentless multiculturalism, anime, giant asteroid colony ships, milspec

You are the best that Earth has to offer. You’ve been screened, trained, and tested. No expense has been spared to prepare and equip you. The colonial fleet has everything from sharp sticks to heavily armed fire support mechs, and people who know how to use them.

Study or battle tank-sized crustaceans. Negotiate a peace treaty between feuding extra-terrestrial clans. Discover the secrets of an ancient human civilization. Defend your new home from hordes of conscript-slave troops and their despotic overlords. Undergo an alien rite of psychic initiation. Smoke out and capture a double agent amongst your own ranks. Bug hunts, standup fights, mysteries, kidnappings, guerilla warfare, diplomacy, orbital claim jumpers, prison breaks; any or all can be in your future in the Eros Project.