BoxUp is a compact variation on traditional Sokoban, where all boxes are hollow and open on one side. Importantly they can be moved by pushing from the inside only (not the outside). There are two sizes of boxes, small and large, the aim is always to push the small red box inside the large blue box. Black boxes may help or hinder your progress.
Use the black pusher (small square) to push the small red box inside the larger blue box.
Use the Puzzle drop-list to select a puzzle.
Use the Restart (Action) or hit space to reset the puzzle.
Use the cursor keys to move.
Use the u key to undo one or more moves.
Nx2 puzzles by Don O'Brien (2003)
Click here to explore a set of Nx2 computer generated puzzles provided by Don O'Brien. The hardest puzzle here is 12 units (6x2) with a solution length of 108 steps.
4x3 puzzles by Bob Henderson (2012)
Click here to explore a sample set of 4x3 computer generated puzzles provided by Bob Henderson. The hardest puzzle here is (again) just 12 units but has a solution length of 153 steps.
100+ of the very best of Bob Henderson's puzzles were released in 2012 as an iOS app for iphone and ipad.
Links & related pages
- HTML5 Boxup: the original BoxUp puzzle set playable on touch devices (HenleyMob)
- BoxUp iOS app: the commercial app for iPhone and iPad released in 2012 (110 puzzles!)
- GottaSolveit review: GottaSolveit blog spot review (2012)
- GamesKeys listing: BoxUp features in GamesKeys list of Top games to tryout in October 2020
concept & applet - © Andrea Gilbert 2003-2012
puzzle designs - © Andrea Gilbert 2003, Don O'Brien 2003, Bob Henderson 2012
applet JS conversion - cheerpj transpiler from Leaning Technologies - 2020