This is a game you can play forever. Each play through is fundamentally different, in style dependent on the factions chosen and number of players. Asymmetric action maps and faction abilities allow unique combinations and strategies. You can compete for military conquest or resource domination but the threat of combat is just as important as combat itself. Achieving the win condition is dependent on completing 6 of 10 possible accomplishments, where all but one is equal for everyone.
The art is stunning and the components (I have the kickstarter version) are compelling. Everything has a weight and feel that enables players to have a rich experience. It's one I'm always down to play given the time (2-4 hours)