Ironfell is an indie, Free to Play, time travel themed hex-tile RTS MMO Game.
"Start in a safe green valley surrounded by mountains. Collect resources, build an empire, conquer space and time. Ironfell is an independently published, hex-tile strategy game set in a massively multi-player epic permanent universe. It has over 50 units and buildings with hundreds more planned. It's free and browser based, with an Android version coming soon. In Ironfell you can can gather stockpiles of resources to gain an unfair advantage over your enemies. The longer you've been playing for, the more resources you have, the stronger you are. And you take that full advantage into battles set in a massive persistent world."