ENDLESS™ Legend
Might contain spoilers.
As a 4X game, ENDLESS™ Legend bears no small number of similarities to the genre-defining Civilization series, yet it has a personality all of its own. Despite the existence of common unit classes, the factions are asymmetric, down to the resources they use, with very different playstyles. On top of that, instead of being a blank canvas for players to settle, the map is divided into regions that can contain only one city each, making it even more crucial to expand early and often.
I had fun playing one full game, but I found the UI too difficult to use at 4K for me to stomach more. Another, minor annoyance is how it minimizes the game when tabbing out in fullscreen mode.