After a no-show at E3 last week, Portal 2 maker Valve has confirmed it will present at August's show gamescom.

Valve joins Capcom and Sega on the list of attendees, according to a Go Nintendo report.

But what, exactly, will Valve present?

More information on DOTA 2, Valve's only currently confirmed project, is widely anticipated.

DOTA is a custom scenario built for Warcraft III using the game's world editor. The idea is to destroy the opposing teams' Ancient boss using a squad of hero units, which can be levelled up and decked out in better gear throughout the course of the battle.

Valve's gamescom presence may, however, feature an announcement regarding downloadable content for superb first-person puzzler Portal 2.

And then, whisper it, there's always Half-Life 3.

gamescom runs from 17th to 21st August.