Hello.I am new to the game and wanted to play some community maps and downloaded some, but they are all TMNF files and if I want to play them TMNF just opens and says that theres an issue. I dont know why they are stored as TMNF -map files. Can somebody please help me

.gbx files are for all Trackmania maps across all games. So, while your computer displays any .gbx file as a TMNF map and opens that game when you try to open the file, the files here are all for TM2020.

If you put the map files in TM2020's maps folder (by default, that's at Documents/Trackmania/Maps), then you can open TM2020, go to play a local map, and browse the maps from there.

Thanks