When comparing Tales of Maj'Eyal vs OpenRA, the Slant community recommends OpenRA for most people. In the question“What are the best open-source games?” OpenRA is ranked 19th while Tales of Maj'Eyal is ranked 25th. 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 A lot of depth through many character classes and quests
Pro Pretty polished compared to other open source games
Pro Easier to learn than some other roguelikes
The graphical menu system helps a lot.
Pro Built-in but optional chat system for bragging or when you get lost
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 Bad balancing
Not all classes are balanced. Some are clearly weaker. As an example, every class that can summon, cannot avoid their summons to waste their skills. This is not important, except if you only have 1 summon, like the alchemist, that often charges you.
Con LUA bugs
It depends on LUA for many (if not most) things, this could ease the development, but in the end, the result is several crashes which are hard to debug.
Con Heavy resource need
Lots of graphics effects, which may make the game run slower on older systems.
Con Graphics may not appeal to everyone
Mostly because they are a mix of styles assembled throughout the lifetime of the project instead of one consistent whole.
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.