You know what? We neglect the humble six-sided die. Dungeons and Dragons has worked its way into our heads so much that, at this point, when I think of a die I picture a D20. A moment of silence, please, for the neglected cubes my child self used to play Mouse Trap with.
Or maybe not, because the D6 is back, baby. Specifically, it's back in Spellsided, the upcoming "dice-builder" strategy RPG that just showed itself off at the PC Gaming Show. You're a D6, each of your sides holds customisable spells, and it's on you to roll your way about the world in a manner that deploys the right spell(s) at the right moment.