Because we have more than one game based on David Cherkasskij Treasure Island 1988, we could make them into series. The series would be called either "Ostrov Sokrovishch", "Soviet Treasure Island" or "Doctor Livesey", whatever fits better. The another game is official "Treasure Island 2005". "Dr Livesey rom and death edition" would be listed as unofficial game. If you know any other games about soviet treasure island, add them to the series.

https://www.speedrun.com/ti_2005