SCS Software puts its entire catalog on sale . During a seasonal sale:

Most modern ETS2 unlockers do not modify the game's executable file directly (which would trigger an immediate antivirus response). Instead, they typically operate by:

A DLC unlocker is not a traditional mod. You don’t install it in the Documents/Euro Truck Simulator 2/mod folder. Instead, it is a that manipulates the game’s memory or Steam’s authentication protocol.