We’ve just released an official Game Compatibility List, and you can check it out here.
If a game is listed as being compatible with Citra but you are having trouble with it, please refer to the FAQ before posting to the support forum.
Some games require some files to be dumped from a 3DS console and integrated into Citra in order to work. Below are known games requiring files. If you wish to play a game in one of the below lists, click the links for instructions on how to dump the necessary files from your 3DS console.