They’re certainly online RPGs, but they lack the key element of a game that actually makes it an MMO and that’s a persistent world. I’ve played Unison League on and off for a while and it’s a surprisingly fun game. It’s just not an “MMO” because it doesn’t have a persistent world. Instead, it has a persistent hub where players can interact, but much of the gameplay takes place in instanced zones. A bit like Dungeon Fighter Online and Dragon Nest actually.
Anyway. Having played dozens of non “MMO” mobile games, a game like Avabel Online is a pleasant surprise. Avabel is a traditional MMORPG with a large persistent world and thousands of players online at any given time. My only real complaint with Avabel is that playing it on a smaller screen, like the Iphone 4, is extremely difficult. It’s a lot more fun and more efficient on the iPad or a larger phone like the Galaxy Note.
You’d be surprised how few actual MMOs are on the mobile platform. Games like Monster Strike bring in like $3.8+M a day in revenue and bring little new to the table. If you’ve played Puzzle & Dragon or Brave Trials, Monster Strike isn’t exactly anything new, but still brings in the big bucks. It’s weird how successful these games are, but there are only a handful of actual MMORPGs on mobile.