The Emperor calls for new Admirals! The epic Warhammer 40,000 RTS from Tindalos Interactive and Focus Home Interactive is free to play on Steam right now until August 26th at 6pm GMT, and can be purchased at 40% off, the biggest discount yet. The Chaos Campaign Expansion, that brought a brand new Chaos arc in June, is also available at 15% off, but is not free to play during this time. Select your... more.