Valve announced the imminent removal of Dota 2 32-bit support in an announcement about the upcoming The International 10 tournament. Directx 9 support will be removed along with 32-bit system support for Dota 2. He recently joined online games that update system requirements by announcing a transition to Guild Wars 2 Directx 11. Valve cited the change as “keeping the game and the Source 2 engine alive.”
Removing Dota 2 32-bit support
Valve said in a statement:
“As Dota has grown and expanded over the years, so has the technology (both hardware and software) that powers it. We plan to remove support for some legacy systems and configurations to keep the game and source 2 engine alive. Nothing has changed for today, but in the coming months we will implement the following changes:
Support for Dota will be removed on -32-bit systems. To run Dota, you will need to have a 64-bit machine and operating system.
Support for macOS versions under -10.14 will be removed.
-DirectX 9 support will be removed. Users using DirectX 9 will switch to DirectX 11 instead.
-OpenGL support will be removed. Users using OpenGL will switch to Vulcan instead.
-Support for XAudio (-xaudio) will be removed and SDL Audio (-sdlaudio) will be switched.”
Valve went on to explain that these changes will not change for many players, with most players already using new technologies.
Valve still recommends that if there are players who don’t switch to new APIs, they should switch and contact them if there are problems.