In the game LittleBigPlanet you can send digital signals between logic gates which are internally 32-bit floats. Because of the game's mechanics, the most data you can reasonably store in them is 24 bits using just the mantissa.
There's a small community of me and a few other people that like to build computers in the game, kind of like the redstone computers in Minecraft. The most efficient architecture is a 24-bit word size, so it makes sense to split that in 4 and use 6 bits per character. Because of that, some of the computers in the game use the Apple II charset.