Insanity Cube PlusA shape variant of a Meteor Madness with all faces showing the same cut pattern.
Inside Track 2Four intersecting circles plus one ring of marbles movable in more than one configuration.
Inverse-1The concept of the Square-1 got inverted in this puzzle. A closely relative to the Split 1x2x3 III but with eight segments.
Inverse-2A similar puzzle to the Inverse-1 but the edges on the middle layer were split into two halves.
IQ LollyA set of three puzzles differing only in size and the number of tiles.
Iron ManA 2x2x2 modelled to resemble the marvel character of the same name.
Ivy + Offset SkewbA corner turning hexahedron. A hybrid model which combines an Ivy cube with a offset Skewb.
Ivy MadnessThe easiest possible face turning triangular dipyramid in shape of a nine-sided solid.