Did I miss something or did Rayman somehow not get nominated here yet?
The franchise is one of the most famous and loved in history, even though no new games have been coming out in about decade. The first Rayman is considered a classic, and at the same time as a notoriously hard, grueling challenge.
Although it was more popular on consoles, especially Playstation, the PC DOS version does have its own charm. The PC also had a few exclusive spin-offs / level packs that never made it to any consoles. Some of them were included in a compilation known as ‘Rayman Forever’, which is now available on GOG. https://www.gog.com/en/game/rayman_forever