Archeus Fantasy Roleplaying was distributed under a GNU Free Documentation License. The design goal was a simple system that could handle virtually any roleplaying situation, though the system is a generic fantasy setting. A secondary goal was to ensure that "the bad guys" would always be balanced with "the good buys" (player characters), even as either group advanced in power level.
The 0.3.1 version of the system was released in 2001 and has not been updated. The game presents a fairly robust and flexible method for character creation. Characters have "primary" and "secondary" stats, which are derived from primary stats. Any number of secondary skills may be created to support any needed action; skills may have active or passive uses. All opposed actions are resolved by using a lengthy "statistics bonuses" table to modify a statistic which is then compared to a percentile dice roll to determine success or failure.
The hosting site presented a series of online forms that users could access to submit new gaming materials such as skills, monsters, weapons, spells, and equipment which would then be incorporated into the rules.