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Ten Billion Barrel (Professor)A ten billion barrel with two extra layers including 20 additional marbles.
Ten Billion Barrel X4 (10 layers)A ten billion barrel with ten layers which is five times the size of the original puzzle.
Ten Billion Barrel X7A ten billion barrel with fourteen layers which is seven times the size of the original puzzle.

Ten billion 2/3A ten billion barrel with only two colums to push the marbles up and down.
Ten billion barrel with restricted movesA ten billion Barrel with two rods extended by the size of one marble.
Ten billion holeA Nintendo ten billion barrel transformed into a varikon puzzle.

Tera IcosidodecahedronA Teraminx truncated into the shape of an Icosidodecahedron which is an archimedean solid.
TeramoidThe even higher-order version of the megamoid
TerrorminxA Teraminx with a sticker scheme resembling the Cube Ultimate.

Tetra Bandage pillowed v2A bandage cube (a bicube to be more precise) transformed into the shape of a Pillowed Mastermorphix.
Tetra Pyramid 6x6x6A V-Cube 6 truncated like the Tetra Pyramid, similar to the Half-Truncated-Cube.
Tetra Pyramid-1A Square-1 truncated into the shape of Tetra Pyramid.

Tetra-PyraminxFour Pyraminxes glued into one big puzzle. Thanks to the trivial tips of a Pyraminx the functionality is unchanged.
TetraStar (aka 24-Tetrahedron)A tetrahedral version of the Little Chop, also known as 24-Cube.
TetraVex 2x2x2A 2x2x2 designed after the basic rule of the namegiving puzzle "TetraVex".


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