Play World of Warcraft: Cataclysm

The Dark Portal opens onto Outland, blood elves and draenei join, and Illidan waits at the top of the Black Temple.

Northrend, the death knight as a playable class, and Arthas on the Frozen Throne at the top of Icecrown.

Pandaria opens after ten thousand years, with the monk class, a farm at Halfhill and a war the Horde loses to itself.

An alternate Draenor before it broke apart, and a personal garrison that quietly replaced the world outside it.

The Burning Legion returns, every specialisation gets its own artefact weapon, and Suramar unlocks over months.

Kul Tiras and Zandalar on opposite sides of a faction war that starts with Teldrassil burning.

The afterlife split between four covenants, each with a campaign and a set of abilities you commit to.

The Dragon Isles, dragonriding flight with real momentum, and talent trees handed back to the players.