The Fadi Cube, invented by Oskar van Deventer in 2009, is a 4x4x4 corner-turning puzzle, also called the Mosaic Cube. Mass-produced by Meffert’s (2010-2012) and LanLan (since 2018), it offers ~3.7 sextillion combinations. Aedan Bryant’s unofficial 40.92-second solve is the fastest. Solve by pairing edges with centers, then as a Redi Cube using commutators like sledge and hedge. A niche challenge, LanLan’s versions turn smoothly with lubrication. On rubikverse.com, the virtual simulator provides an engaging way to scramble and conquer this intricate puzzle anytime.