There are so many MMOs now on Android. But compared even to PC MMOs, I feel CH is way better. The best thing about it is that it is not overwhelming. The charm lies in its simplicity. Other games make you feel great by offering so many things but in the end, we just want to create a virtual character and a virtual world for ourselves, make friends, show off our items and stats, admire others and be admired. Nobody wants an online game where everybody is so busy doing something and not caring about what is happening around them. That would take out the meaning of online gaming. CH doesn't have too many intrusive elements. Though we have to grind like hell, we can still go on playing without getting sidetracked. The problem with most MMOs is that they end up playing us instead of us playing it. We go here and there not knowing why or what to do. Conversely, CH quests are simple. The stories are short and people are communicative. This, I think, makes the game so addictive.
I'm starting to think that Celtic Heroes is often liked as an MMO because of the small server size. You know everybody in your world, everybody knows you. Compared this to pocket legends where there are always atleast 2000 players online, you're lost in a crowd.
Order and Chaos is the complete opposite of Celtic Heroes, huge player size, better content. Although it may seem that the better content would outweigh the huge player size, it does not. You play in laggy atmospheres and you don't ever get to know everyone.