A fun variation of popular Rubik's Cube, Cubulus features attractive graphics and simple yet potentially addictive gameplay.

One of the most unique and addictive puzzle game I?ve ever come across but also sadly one of the most obscure, Darwin?s Dilemma is slightly derivative of the old Evolution...

Deflektor is an excellent PC remake of the original (well, back then it was) and difficult puzzle game designed by Costa Panayi first for the Spectrum computers.

One of the best freeware puzzle games I've ever played, Diabolika is a fun, very original board game from Blackeye Software.

Diabolika 2 is a great sequel to Diabolika, a unique strategy/puzzle hybrid from freeware developer Blackeye Software.

Drops of Light is an excellent puzzle game that plays like a blend of classic 15-peg puzzle game, some inspirations from Chinese checkers, and a twist of color physics.

Einstein Puzzle is a great, free cross-platform, open-sourced remake of DOS classic shareware gem Sherlock, which was in turn inspired by a puzzle devised by Albert Einstein, who supposedly claim...

Farocar is a fun brainteaser that is similar to classic Soko-Ban, except the levels are not as imaginative.

Fathom It! is a fun and addictive puzzler that is an excellent computer version of "Battleships," a popular column that appears in GAMES magazine, among others.

Fiddle is an excellent variant of Tangram, coded by the same designer who designed Cyberbox, a very clever freeware brainteaser.