The developers of Yield! Fall Of Rome have now released version 1.0 of their game, so it is not anymore early access.
Yield is a light-weight historic 4X game, set in the time when the Barbarians are invading Rome. You start with a single settler, develop technologies and expand over the map, as in all 4X games, but in a very cute graphics style, and not evening-filling, but rather a 4X game for in-between.
If you are curious, the game is right now on discount with 50% off, now for 9.99€. You can get it here, and discuss it with us here.