Caverna: Cave vs Cave
In the two-player game Caverna: Cave vs. Cave, each player starts the game with only two dwarves and a small excavation in the side of a mountain. Over the course of eight rounds, they'll double their workforce, open up new living space in the mountain, construct new buildings and rooms in which to live, and dig for precious metals.
Check out Caverna: Cave vs. Cave on Board Game Geek.
How to Play from Heavy Cardboard: