Here's the ranking I would give for the versions of my childhood game!
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0. Redemption: Fanmade, but nearly perfect remake that improves Rayman 1 in so many ways and takes a lot from the series as a whole including Rayman GBC. It's just that it missed the mark on a few missing things like bonus levels or animations, and some questionable changes for the level design or the Hunters' bullets.
and all the pirates into ugly random unfitting robots cuz Twitter Moment)
1. Saturn: Prettiest version of the original with plenty of nice extra details and changes, and a far more epic atmosphere for the final boss, including the first appearance of the Glade of Dreams' two Moons in the PAL version!
Basically a better PS1 version, though the sounds are a bit high-pitched... First game of my childhood and gave me my username.
2. PlayStation: The most balanced version of Rayman 1. It got the most iconic level design and Ting sounds, drum music and some other extras, and feels very good to play overall! THE Rayman 1 as most people know it!
3. PC/DOS: Pretty good and has the better framerate and some arguably better looking tiles (for some of them), a very pretty introduction to Bongo Hills (even if I prefer the PS1 level design), also has the Ray Breakout minigame and things like bonus animations after bosses...
But the Ting sounds are too boring, the soundtrack is
very incomplete in many releases (and you don't even have the intro in those), the backgrounds lack life and aren't very good, and the cage placement has to be the most confusing in my opinion... and the added voices are a joke.
But hey, it got some forms of expansions through Designer, 60 Levels and By His Fans (even if the featured levels are... a pain

)! So it's the best one for the content, and Designer's map editor makes it virtually endless and lets you express your creativity!
4. Jaguar: Didn't play it much yet, but it's pretty good despite the downgrades for the music and some of the mechanics, and it's the most unique version of the classic Rayman!
It did very cool things like the mosquito being able to shoot projectiles, its own Ray Breakout, and some exclusive pieces of music and level sections! Not a well-known version due to the console itself, but yet
iconic!
5. Advance (GBA): Actually looks and feel very good when played on an original GBA thanks to the LCD screen, but overly saturated and painful for the ears on another system... That and they removed some stuff like the first part of Bongo Hills, and the soundtrack selection is a joke at times (only 17 pieces VS the 57+ originals) like Mr Dark's theme playing in that same level!
Some platforms are broken and so is the maximum momentum for ice physics, which results in various lives being impossible to get. Screen is too small for comfort, making it too hard to react to what's coming and it glitches some triggers like a cage in Gong Heights...
Still, got its charm! It gives you extra health (and lives + continues), more checkpoints, more trigger sparkles or platforms (though they took it too far in Space Mama's Crater part 2 by removing the challenge altogether

) and removes some excessive enemies for a better difficulty. Not to mention replayable Mr Dark's Dare, and the few exclusive pieces of music are nice.
6. DSiWare: Could have been much better if it wasn't for the broken knockback and invulnerability frames, the ridiculous number of health points and many flaws like highly questionable graphical changes in Band Land or missing music and weird sounds (and no Ray Breakout despite the PC content...). Also, that camera photograph feature would have been a creative and fitting addition if it wasn't so forced and annoying...
But overall, looks very great, plays pretty close to the original, has achievements (an inspiration for those in Redemption) and a convenient map for new players, extra dialogue and the ending FINALLY acknowledging the Great Protoon. Most importantly, it has plenty of quality of life improvements like keeping the grimace, more checkpoints, 30 continues, retaining Tings on death and only 50 being required for lives, and you can skip level sections when backtracking!
7. Classic (mobile): Mobile controls are a tumor on gaming, the end.

Ray Breakout is broken, and a very bland port with tons of new tiny issues overall... But hey, one of the most accurate ones with a few improvements over its PC counterpart, it was (partially) free, and it had the achievements, difficulty modes, auto-saves and Breakout mini-game on the map that inspired Redemption, I'll give it that... If only it would still work on my current phone! It's not even available in the store anymore cuz Ubey iz lazy!
8. Ultimate (Pocket PC): Didn't play, but easily seems like one of the worst versions based on the few things I know about it.
20 HPs makes the DSi version look reasonable, and bosses have been nerfed too much (unless you glitch out Mr Sax and must hit him...
2 5 5 times!

)... And that soundtrack... What tunes, am I right?
9. Flash web demo: The Sonic 06 of Rayman games.
Bonus. GBC/PDA ports: Not really counting it in the ranking, it's not the same game even if it adapts Rayman 1 and takes some enemies/objects and ideas from it (like a piece of level design in Airy Tunes). It's more of a Rayman 1.5 with the Rayman 2 style and music that it has. It would be unfair to compare it when it was made for such a primitive system...
But very solid handheld adaptation for the time, with many great ideas that inspired Rayman Redemption, and Mr Dark has never felt more epic and badass!
The PDA rereleases were also nice (mainly PPC, PalmOS didn't even had music...), with better graphics and added features like online challenges or the world map accessible after every level! For its own special ranking: Pocket PC/Symbian > Game Boy Color > Palm OS (color) > Palm OS (greyscale).
Anyway, I still like most of them and there's not one that I can say I truly hate
(no, we're not counting the demo, it's not even a complete game
), which is more than what can be said about Rayman DS for Rayman 2
