2d20 System - RPGGeek

2d 20 A 2D automation sandbox adventure. Build an automated factory with Mana. Every RPG system has a 'main' roll and the 2d20 system is no different. Here's how it goes: Roll 2 twenty sided dice. Your goal here is to

2d 99, The 2d20 system is a dynamic, narrative system, desned to produce varied and interesting results from dramatic and action-packed situations. Characters roll two d20s, attempting to roll.