The OpenRA project plans to drop the Windows XP support to gain access to more modern programming APIs: https://plus.google.com/+OpenRAnet/posts/dWQZG1DuAE2 Maybe an option also for 0.A.D.? Maybe performance relevant? Wordwide marketshare of Windows XP is ~10%: https://www.netmarketshare.com/operating-system-market-share.aspx?qprid=10&qpcustomd=0 Windows XP support has ended at 8th April 2014: https://www.microsoft.com/en-us/WindowsForBusiness/end-of-xp-support