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Playing D&D in trickster mode: Instead of a D20, you give the players a coin with the numbers 1 and 20 written on either side. Requires an extremely creative DM for maximum hilarity.
(This kind of campaign is likely to end up a bit like the plot of The Road to El Dorado)
Trickster mode D&D
I probably shouldn't be the DM. It would get weird. Hilarious, but weird.
@InvaderXan oh yeah, definitely; i rewatched this movie last year and I totally want that sort of crazy all-over-the-place energy in a tabletop tbh
@InvaderXan oh shit yeah I wanna read that book xD
@InvaderXan
for non-geeks, D&D is already uber-weird, tbh 
@InvaderXan Numenera has a system called "DM interventions" where you can offer your players extra XP for dealing with exactly such shenanigans that you (as a DM) can come up with.
@Kiki I wholeheartedly approve of this!
@InvaderXan ah, speed dnd, played with only a coin! I've done this before. no book, no sheet, just a couple of coins.
@InvaderXan it's really just improv with some roleplay mixed in but it's good stuff
@starwall I'm going for that but with the excessively over-the-top energy some people put into their crits. Like one I saw once where a character rolled a 1 and their magic sword accidentally cut through the fabric of reality.
@InvaderXan oh damn that's actually a really fucking cool system :o
@furkachi Imagine the possibilities!
@InvaderXan I mean, as a core mechanic it might make it tiresome quickly, but as a skill you can do on throws like, 3-5 times per short rest or something? totally great