WinterSun is a FREE MMORPG (multi player online role playing game) with a retro 2d style for Android and is currently being actively improved upon by the developer!
You can run around killing other players or NPCs via PvP, chat to other players using the online chat function and also level up your character, including battling other factions, and do some quests using the new questing system.
Winter Sun has large maps to explore and also features dungeons, clans, and different factions. Will you be a druid bent on the destruction of the realm, a knight of the Protectorate charged with rooting out all evil and destroying it, or a Monster causing destruction and chaos wherever you go?!
The MMO will support instances and equip screens (so you can wear armour, swords, etc)
Please note that there may be some bugs whilst it is being developed, and things that don't work. At the moment you can 'chat' to other players and kill things, go inside the shop and buy and sell things (there is no auction house,... yet!)
Feel free to mail suggestions to the developer link on where you want the RPG to go - I have yet to do things like a instance system so there is an opportunity to help sculpt what the game is going to be!