Valve developer shares video of an even earlier version of Deadlock, in which the player battles Half-Life 2 enemies with Left 4 Dead weapons
Last Friday, Valve formally announced Deadlock, its new multiplayer shooter that blends third-person action with a MOBA structure. Deadlock's road to its official reveal has been highly unusual, with Valve pretending the game didn't exist for several months, all while inviting thousands of people to play it.