When comparing Anno 2070 vs OpenRA, the Slant community recommends OpenRA for most people. In the question“What are the best RTS games for PC?” OpenRA is ranked 26th while Anno 2070 is ranked 37th. The most important reason people chose OpenRA is:
Classic Command and Conquer with overhauled UI, rebalanced gameplay, replays and observer mode.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Focus on efficient building placement
Your economy will rely on the placement of your buildings, farms, etc.
Pro Addictive gameplay
This game is easy to find yourself sucked into. Many in game events that alter the environment for the good or the worse and each has their own consequences. Thus your city building must have prior planning to make sure it is the most productive and does not cause disasters.
Pro Modern improved recreation of the classic game
Classic Command and Conquer with overhauled UI, rebalanced gameplay, replays and observer mode.
Pro Fosters creativity
Features an in-game map editor and is geared towards modding.
Cons
Con Uplay
Though the game itself is fun, then the Ubisoft launcher, which is by far the worst thing about this game, can ruin the experience.
Con A little long
While the game is fun, the match times require a few hours or multiple game sessions just to get anywhere.
Con In a grey zone
(The C&C guys are actually well aware of this project and are fine with it... so this isn't true.)
All CnC assets are still copyrighted by Westwood/EA and not freely available anymore, so per law, it is illegal to share them as mods. Also, Dune was never available as free download, which makes the whole mod illegal as well.