Rune Adventure Online is a free MMORPG that runs in the browser. There’s nothing to download: players sign up, and they’re in a shared isometric world with everyone else.
The world is thirty connected zones with real-time combat. Players raise critters whose genes decide how they look and fight, and trade them with each other, so the economy is driven by the players.
We built the game client to run in any modern browser, on desktop and phone, with accounts, a shared server, and trading between players.