The Dota 2 International Battle Pass will add a two-part co-op campaign

DOTA 2 will be adding a campaign, complete with a story.

The DOTA 2 International Battlepass, which sells for $9.99 (or $36.99 if you want to grab the level 75 perks immediately), will grant you a number of rewards immediately, including:

Immortal Treasure I
Immortal Treasure II
Immortal Treasure III
The International 2017 Music Pack
The International 2017 Cursor Pack
Evolving Courier Level 1
Evolving Ward Level 1
Seasonal Terrain – Spring
Jakiro Taunt – ‘Fluid Mechanics'
Battle Cup Entry Ticket
5x Player Card Packs

It'll also unlock ‘Siltbreaker', a multiplayer campaign split into two parts.

The official site offers more details: “Available to play later this month—and with Act II arriving in July—this all-new campaign calls upon you to party up with three friends or queue-met allies to battle through a diverse landscape of loathsome monsters, cunning traps, and other lethal terrors.”

“With the fate of Dark Reef and the safety of the free seas hanging by a fish-gut thread, you'll need to work together if you're to find any hope for survival.”

Beyond this, the pass lets you compete in the International, which may move from the US in the future.

There are numerous other potential prizes outlined on the site – if you're an avid Dota 2 player, it's worth a look.