all of stellar stone's games were built on eternity, a game engine developed by sergey titov, chief executive officer of ts group entertainment, who licensed it to stellar stone in exchange for a "large chunk of the company". according to titov, the company "[wanted] to do things cheap and [was] not willing to pay even 200-300 [thousand u.s. dollars]" to create an engine on their own. despite being the owner of stellar stone, titov claims he "didn't have much design and development input or any power to stop [the company's games] from being released."