with Zonks instead of rocks. The enemies are moving scissors, called Snik Snaks, and electrons, which resemble sparkling stars. Supaplex introduces a number of new elements that were not present in Boulder Dash, including bugs, pieces of base that randomly cause life-threatening electrostatic discharges, Ports, which limit Murphy's movement to specific directions, and terminals, which set off yellow Utility Disks. Utility Disks are explosive floppy disks and come in three different colors: Orange Disks work like Zonks, but explode when hit or when falling. Yellow Disks do not fall, yet may be pushed in any direction, but not pulled (which allows creating Sokoban-like puzzles), and explode when the Terminal is used. Red Disks can be carried and dropped when convenient, exploding seconds after. Supaplex is the first Boulder Dash-like game that is not fully grid-based: while the playing field is an obvious grid, the objects do not "snap" from one grid position to another, but can be halfway or "in between" grid positions while moving or falling. This behavior has led to a number of well-known bugs that can be turned to the player's advantage, many of which need to be exploited to complete fan-made levels. For instance, by turning around quickly, the player can cause an enemy or rock to "bounce" off Murphy. The game also applies "gravity" on some levels, which means that Murphy will fall down empty spaces and will be unable to go back up, unless he climbs up by using bases. Gravity is not indicated visually the player can only notice by trial and error. Reception Supaplex received mostly favorable reviews. Comparing it to Boulder Dash and Emerald Mine, CU Amiga lauded the variety of the puzzles and the longevity of the gameplay, only lamenting the lack of a multiplayer mode and the need to restart difficult levels if the player makes a mistake. Amiga Action thought that it improved considerably on the game inspiring it, but expressed dissatisfaction with its graphics, and also felt that it was priced high since several public-domain Boulder Dash clones already existed. Zero praised the puzzle-oriented gameplay as addictive, with minor criticism directed at its stagnant graphics. Amiga Format also found the game to be addictive, but was more forgiving of the graphics, calling them "simplistic but effective". Amiga Computing considered Supaplex to be an average game. It described its gameplay as dated with new features "to give it