The ETS2 modding community is massive. However, major game updates often break existing mods. When ETS2 moved from v1.45 to v1.46 and beyond, many popular mods (map mods, truck packs, and physics mods) initially stopped working.
Once you have downloaded v1.45, here is the "top" content you need to explore immediately. euro truck simulator 2 v145 download top
Multiplayer "Convoy" sessions now allow players to join even if they don't have all the host's mods; missing vehicles are replaced with colored placeholder boxes. The ETS2 modding community is massive