In the meantime, the company went ahead and sold-on the rights to Spectrum Holobyte, who launched an IBM PC version in 1987. Soon after came commercial versions for the Commodore 64, Amiga, Atari ST and Apple II, all made possible with various licences and sub-licences. All these deals were based on uncertain foundations; the legal situation was far from clear, thanks in large part to the difficulty of doing business deals in the Soviet Union.