When comparing Ace of Arenas vs X-world, the Slant community recommends X-world for most people. In the question“What are the best MOBA games on Android that are as in-depth as their PC counterparts?” X-world is ranked 4th while Ace of Arenas is ranked 8th. The most important reason people chose X-world is:
Each character has its unique skills and specials. No character is "overpowered" as such.
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Pros
Pro 5v5 mode with traditional 3Lane/jungle map
The maps are just like maps you would find on PC. It gathers the traditional style MOBA assets and throws it into a pocket size version for you.
Pro Over 50+ champions with skins & weapons
Tons of unique characters to choose from. Having been launched in September of 2015, they've updated/developed the game quickly.
Pro Intuitive controls for mobile
Instead of having to continually tap ones screen to move units, the game has implemented swipe controls, which may make the game easier to control for some as well as cut down on how much tapping one needs to do.
Pro Balanced characters
Each character has its unique skills and specials. No character is "overpowered" as such.
Pro 4 characters per battle diversifies the game
You can choose 4 different character to use in one battle making it diversified and interesting.
Pro Adequate timer
The 15 minute battle clock keeps the enthusiasm and zeal alive for the players.
Pro Concise and immersive 5v5 battle
5v5 battle makes it concise and immersive at the same time. It also makes communication and teamwork easier.
Cons
Con Long queue times
Queue times may be longer than expected because the game isn't marketing that much for NA and EU, which makes for less players when compared to other popular mobile MOBAs.
Con Need a clan to play rank game
Con No chat option
Con Hard to get recall
Would have been better if they have a button for recall instead.
Con Battle queuing can take some time
Since its a relatively new game, the matching may take some time (2-5 minutes).