How to use: Simulate rolling physical dice for board games, tabletop RPGs (D&D, Pathfinder), and probability experiments. Select Number of Dice (1-6 dice) and Dice Type: D4 (4-sided), D6 (standard 6-sided), D8, D10, D12, D20 (critical hits in D&D), or D100 (percentile). Click "Roll Dice" to see individual results and total sum. Roll history shows your last 5 rolls with timestamps. Common uses: D&D ability checks (roll d20), damage rolls (2d6 for weapons), Monopoly (2d6), probability teaching, random decision making. D20 natural 20 = critical success, natural 1 = critical fail. Perfect replacement for physical dice when gaming remotely or testing probabilities.