It looks like you're asking about a download or listing for "Euro Truck Simulator 3" on the website Ocean of Games.
If you navigate to Ocean of Games and search for Euro Truck Simulator 3, you will likely encounter one of three things: ocean of games euro truck simulator 3
SCS Software, the official developer, has stated multiple times that they have no current plans to release a third installment. Instead, they are focused on evolving Euro Truck Simulator 2 (ETS2) through continuous engine upgrades and massive expansions. Why Euro Truck Simulator 3 Isn't Happening (Yet) It looks like you're asking about a download
has not been released or officially announced by the developer, SCS Software . Sites claiming to offer a download for "Euro Truck Simulator 3" are providing unofficial content, which often carries security risks. The Reality of Euro Truck Simulator 3 Why Euro Truck Simulator 3 Isn't Happening (Yet)
: A popular mobile alternative that offers realistic European trucking and is actively developed with new features like multiplayer. Where's Euro Truck Simulator 3? - SCS Forum