Civilization 5, with the latest expansion. It's on Steam.
Building a civilization from scratch, meddling with axe-wielding Barbarians trying to sack your city, exploring deep forests and jungles, the highest mountains, merciless deserts and far oceans and archipelagos, colonizing and cultivating new land, becoming the world's leading cultural and economic force, confronting your enemies in open combat and finally burning their empire to the ground and incorporating it into your own...
It's so adventurous. We should play it together.
