Press z and m for editor 1 - Blocks 2 - Inside geometry 3 - Spikes 4 - 4 long blocks 5 - Special 6 - Speed Portals and more 7 - Slopes and more 8 - New Pits and more 9 - Monsters and more (Theory of Everything 2 V2) by IIINePtunEIII is a hard demon level rated 10 stars.
