Early release of the game had copy protection which, on detecting a pirate copy, formatted the diskette with the game. This caused several anti virus programs to classify and identify it as a trojan, with the name "Trojan.Durell"!
The PC port of this game was converted almost verbatim, including the single-color sprite graphics from the Spectrum version (or C64, take your pick, since they were nearly identical). This was a change for gamers used to the PC at the time, since most sprites and game graphics usually used more than one color. For examples on how this game looked on the PC, check out the screenshots.