Games for Windows 1.0
Few games were made for Windows 1.0. A notable exception when it comes to major titles is Balance of Power, developed by Chris Crawford and published by Mindscape. It was released for Windows 1.0 in 1986, among other platforms. It actually included a runtime version of Windows 1.0 that didn't require installation.
There were also several freeware and shareware games developed by hobbyists and enthusiasts.