I've been playing it off and on since maybe 2016-18 (somewhere within that range), so a pretty long time for me, but Pokemon Rejuvenation.

If you don't mind swearing, death, and generally kinda edgy stuff, it's a fun enough game with a lot of content. 15 out of 18 badges (one per type) are currently available, with a very long story to go with it.

Just started over on my Steam Deck, making this my umpteenth time starting over, because I felt like it and wanted to do a grass only run, similar to my fire only run. Also, unlike just about every other RPGMaker XP fangame, the devs have a Linux version available, which has an appimage instead of the .exe file to run the game and have made a bash script to update the game to replace the .exe file for that. Wine not required to play at all!