Steam’s top-selling PC game released in 2015 was… Grand Theft Auto 5!
GTA 5 was released on April 13th of this year, and is owned by 3,572,564 people on Steam. Fallout 4 came in at second with 2,482,504 sales, and ARK: Survival Evolved in third with 2,187,649 sales on the platform.
The list for Top Sold Games that Released in 2015, can be seen here.
Of course, this list only contains titles that were released in 2015. Steam’s number one sold game of the year that was not released in 2015, was Counter Strike: Global Offensive.