Ports followed for the BBC Micro, Amstrad CPC, MSX, and Family Computer Disk System. Ultimate released the original Sabreman trilogy in quick succession in 1984 for the ZX Spectrum. By delaying Knight Lore 's release, Ultimate protected sales of their then-upcoming Sabre Wulf and created another Filmation game before other developers could copy the style. This created the illusion of depth priority, which the computer did not natively support.
Knight Lore 's novel image masking technique, Filmation, let images appear to pass atop and behind each other without their contents colliding. The Stamper brothers withheld its release for a year to position the company advantageously in anticipation of the game's effect on the market. Ultimate released Knight Lore third in the Sabreman series despite having completed it first. Each castle room is depicted in monochrome on its own screen and consists of blocks to climb, obstacles to avoid, and puzzles to solve. In Knight Lore, the player character Sabreman has forty days to collect objects throughout a castle and brew a cure to his werewolf curse. The game known for its use of isometric graphics, which it further popularized in video games. Knight Lore is a 1984 action-adventure game developed and published by Ultimate Play the Game, and written by company founders Chris and Tim Stamper.