Expert Sokoban is available for free.
Expert Sokoban requires .NET Framework 4.0. If you don't have it, the Expert Sokoban installer will offer to download it for you. Alternatively you can get it here and install it yourself.
We are looking for translators; please contact us if you are interested in translating Expert Sokoban into your language.
If you enjoy this game, please consider donating to CuteBits. This will help to improve our software or create more freeware in the future.