This gives a basic, fluid interface for rolling dice from the D20 system - commonly known to work with Dungeons and Dragons. Die included are d2, d3, d4, d6, d8, d10, d12, d20, Percentile (d100), and custom die rolls.
This generates encounters for the Dungeons and Dragons 3.5 system. One can generate encounters of particular levels, times of day, and environments. One can also filter creature types. Treasure and equipment are generated.