While version is a specific update for Endless Space 2 , the base game is not a permanent "free download" title. To get it for free or at the best price, you should look for official giveaways and periodic sales. How to Get Endless Space 2 for Free
: Offers the Endless Space 2 Definitive Edition which includes the base game and all major DLCs. Endless Space 2 Free Download (v1.5.48.S5)
: Frequently discounts the game by up to 75% during seasonal sales. While version is a specific update for Endless