Welcome to Op20

Op20 is a moderately crunchy point-buy role-playing system allowing an unlimited number of unique builds in a world where all characters are not equal. As designed, the system is more Boss Battler than Dungeon Crawler, with few filler combats, slow replenishing resource pools, and continuous character improvement. It contains some simulation elements utilized during downtime, between adventures, and while adventuring.

The system utilizes a unique Opposed D20 test and combat mechanic. During a conflict, two creatures’ attempted actions occur simultaneously, with multiple possible resolutions. Simultaneous Actions are supported by a Floating Initiative system that eliminates the need for extensive turn tracking and allows for a movement heavy battlefield.

Op20 is for role-players looking to create unique characters from the ground up without a need to make each one ‘combat effective’. Op20 offers a world for those looking for concrete mechanical differences between combat, social and crafting playstyles, where each type of character can thrive with rich character arcs and chances to excel.