ROOM 20 is a puzzle map which only works for version 0.13 for Minecraft Pocket Edition which supports redstone powered structures. There are 20 different levels in the map and in each one you will find challenges ranging from puzzles to parkour. The redstone structures are rather simple in most cases and as a result it’s not a very difficult map to complete. But there are some levels which aren’t easy, like the first level. But don’t give up, there’s always a solution for every level.