KRKAL
Krkal is an excellent logical-action game. With one of three different characters, you have to avoid all dangerous traps, deal with various items, escape from deadly monsters and in the first place - boil your brain - to finally find the way through and reach so long desired exit... ... On the first look, Krkal may resemble games like Boulderdash (Supaplex), Sokoban, Robbo or Magamaze. ... The stones don't fall, instead they are attracted by magnets and there are places, where stones "fall" up or to the left.
http://www.krkal.org/en/dl/Krkal2.4en.exe - 10Mb - Download - Screenshot

Mr. Matt
An addictive logical puzzle game for Windows, similar to the classic Boulderdash, but with many enhancements and extra touches. Teen to adult age bracket, no gore or violence. You are Mr. Matt, digging caves while eating apples and avoiding falling stones or bombs. ... Your best results can be matched against others in the Web-based worldwide Hall of Champions. ... Trial version has no nags and no expiration. ... The program supports 24 languages (Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, English, French, German, Greek, Hungarian, Icelandic, Indonesian, Italian, Norwegian,...
http://www.wrotniak.net/works/mrmatt/_zip/mrmatt-inst.exe - 2Mb - Download - Screenshot

Igor - The Time Machine
'Igor - The Time Machine' is a game in the same genre as Boulderdash and Supaplex and will be the most challenging game you have played in ages. It requires a sharp mind to play and a genius to finish. In short, Igor is a puzzle game. Your job is to finish each level (puzzle) by collecting... The game is also capable of playing Sokoban-type levels. ... Includes built-in level editor to make your own levels. ... The full version is available as Download (no shipping, fast delivery) or on CD-ROM (high-quality CD-ROM, boxed with manual, 60 minutes of music).
http://www.elmerproductions.com/igor/sw/Igor_demo_setup_en.exe - 6Mb - Download - Screenshot