Emulator: ePSXe (Version 1.9.0)
Reported by: Haruka
GPU used for the test: NVIDIA GeForce GTX 760
CPU used for the test: Intel Core i7-4771 @ 3.50GHz
Compatibility: Playable. You can fully play the game since the beginning to the credits roll.
Notes: There are minor graphical glitches in the world map but it does not harm gameplay.
Setup instructions (version 1.9.0):
- 1 - Extract the folder to any place in the computer you desire to save the emulator.
2 - Open "ePSXe.exe" and go to "Config", "Wizard Guide". A wizard will give you instructions step by step to configure the emulator. Select "Config".
3 - A BIOS list will appear, and you can pick any of both (I personally use the PAL one but that's optional). Click in "Next".
4 - Now it will ask you to select a video plugin. I use "Pete's OpenGL2 Driver 2.9" (google for it). Click on it and then in "Config".
5 - A big window full of options will appear. I configured it in this way in my computer but you can adjust depending of the hardware you own:
6 - In the end press "OK" and "Next". The sound plugin list will appear. I use "Eternal SPU Plugin 1.41". Click on it and select "Next" (Nothing needs to be setup on it).
7 - The CD-ROM Plugin list will appear now. Now I ask for your attention for something: there are many people that complain that they have no music being played during the emulation of Rayman 1. This usually happens when you are playing an ISO of the game instead of booting the physical disc. The instructions I'm going to give now are to run the game with an ISO, and to make the music workable. The CD-ROM Plugin that I exclusively use to boot Rayman 1 is "Mooby2 cd disk image driver 2.8" (Google for it). Click on it and then in "Config".
8 - Make sure that the option "Repeat all CDDA tracks" is checked and that you click in "Choose an autorun image" and select the ISO of the game. Make also sure that "CDDA Volume" is set up to "1.00". After checking all of these click in "OK" and "Next".
9 - Now the wizard will request you to setup the controls for the emulation. I usually play with my gamepad (Microsoft Xbox 360 Wired Controller for Windows) but the game is also perfectly playable in the keyboard. Try to select the Digital or DualShock mode, but in case the game complains there's a missing controller you can change the controller mode in the options of the emulator. After finishing the setup, press "OK" and select "Next". Press "Done".
10 - Now that you are done with the configurations, you can select "File" and "Run CD". If everything went fine, the game will successfuly boot with music and sound!
11 - As a last tip, if you want to flavor some nostalgia, create a shortcut of the executable file of the emulator, right-click on it and select "Proprieties". In "Destination", type this in the very end :
Code:
"*Directory of the file*" -slowboot
Like this, the emulator will boot the original PlayStation 1 BIOS before starting up a game. 
12 - Have fun!