Former Microsoft employee, Fog Creek Software co-founder and blogger Joel Spolsky said that the creators of Windows 95 were "obsessed" with supporting games in the OS and even created a special compatibility mode for SimCity.
According to Spolsky, one of the most popular games, SimCity, stopped working after the release of Windows 95. Microsoft didn't wait for the developers to respond and found out themselves that the game doesn't run correctly because of an error reading memory.
Then Microsoft created a special mode for the OS, which monitored the start SimCity on your computer. If it happened, Windows 95 changed the memory allocator so that the simulator wouldn't read the released memory. This solved the problem without patches from the developers.