Supaplex is a video game created by Philip Jespersen and Michael Stopp, two Swiss students, and published by Digital Integration in 1991. It is an extended clone of Boulder Dash. History Aiming to develop a version of Boulder Dash that could fit onto a floppy disk, the designers had a hard time developing better graphics under said constraint. The original Amiga Supaplex version had to fit on a standard 880 kB floppy disk and needed to run on a standard 512 kB Amiga like the original A500 or A2000. In fact, the Amiga version could not be copied onto the hard drive due to copy protection and its custom disk format. The game was released for Amiga and MS-DOS. (Two people from the London area started developing a full version for the Atari ST, but it was never released, because of the limited graphical support.) Unofficial ports have been made to other platforms, such as the ZX Spectrum. Due to hardware-dependent programming, the PC version of Supaplex ran twice as fast as PCs became faster. Herman Perk disassembled the game, debugged it and re-assembled it again. The result became known as SpeedFix. Extra features have also been added without changing the game itself. The developers of the game have declared the software to be freeware. Level editors and a Win32 clone called "Megaplex" were created. Gameplay The game comes with 111 levels, though many unofficial level sets have been released that greatly increase that number. Although the levels must be played in order, the game allows up to three levels to be skipped at any given time. Also, it was very easy to skip additional levels by editing the file that contained the list of levels successfully completed. The game is very challenging, but unlike many Boulder Dash-related games, the difficulty comes from solving the puzzles in each level rather than from semi-responsive controls. Furthermore, Supaplex does not use time limits for solving the puzzles, unlike Boulder Dash. Most objects are identical in behaviour to those in the original Boulder Dash, simply redrawn with a computer hardware theme. Murphy replaces Rockford, who collects objects called Infotrons, which are reminiscent of schematic representations of atoms, instead of diamonds. Instead of dirt, the levels are filled with printed circuit board simply called base in the game's manual, and not lined with brick walls, but with computer chips and other hardware, and filled