You can choose to play as either the mechanized Kingdom of Isenhorst or the magic-based Erlandir Union in a war to gain control of a crystallized energy known as Black Gold.
"The open beta lets anyone join who is eager to explore and battle throughout our unique bilateral land of steampunk and fantasy," says Jim Tsai, VP of Snail Games USA. "The open beta's massive activity data and player feedback will be leveraged to put the final touches on one of this year's most anticipated MMORPGs prior to its launch later this year."
You can find out more about the open beta events and in-game items on the official site.
[Source: Snail Games press release]