what is the 204 system?

204 (pronounced '20-Four') is a modular game system built for map-based TRPGs. Its design is centred on the principle of fun through the inter-layering of simple game mechanics. The primary module – Foundation – is the ruleset to which all other modules are built. It is required for the 204 game system, alongside any one or more 'theme' modules.

 

204 is played using dice. The minimum (and maximum) number of dice needed per player is 4 individual dice. 204 games are turn-based, following the IGOUGO style of play (as seen in many tabletop games).