It is a good game, but not on PC! Here are a few reasons why: It misses part of the full soundtrack that the PS1 and other versions had. It misses some of the graphical effects that the PS1 had. And part of the levels (i guess?). So, in final conclusion, only the PS1 version is worth playing if you're into unfair games. Because it's the definitive version, with all the special effects, like the tings disappearing after you get them, and the music quality is the best, includes the full game with the entire soundtrack. And, the PAL version of the PS1 version even includes an "Ultimate Password" in the end of the game, once you beat Mr Dark.
This Rayman game in the Rayman series will always be my absolute favourite game. I love the awesome graphics (which is very impressive from a game made in 1999, the graphics were really ahead of its time), the characters (for example, the teensies, they were lovable), the soundtrack is so memorable and nice, I love the gibberish in it, and that every level is different on its own. I love that the story is dark and deep, but simple for everyone to understand, and that while it is still dark, it manages to include some humor in it still. If you own a Sega Dreamcast, then I would definitely say buy it, since it's the definitive version of the game. But if you don't have one, or just don't have enough money to buy one, then you can buy the GOG version of the game for PC, from here, because if you do, you can download the included goodies for free, or the N64 version. Both of them are worth the money. If you are into platformers, then this is the game for you. But if you never played a platformer before, then you should definitely buy this game as your first platformer. Trust me, this game is definitely worth the money. Avoid the PS1 version though, since that version only includes half of the game. Overall, great game.
