The 20 side dice is typically used in table-top roll-playing games. These games (such as Dungeons & Dragons) have long been seen as "nerdy" or "un-cool" but the imagination that goes into any aspect is impressive. Just imagine the options of a single roll with this D20. The characters and stories you can build is unlike any movie or book. Playing these games with others teaches you the benefit of sharing creative ideas and working together.