I'm trying to install Theme Hospital on my Windows 7 machine but I'm getting this error:

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I've tried setting it to run in XP compatability mode but didn't hold out much hope, and as expected I still got this error.

Is there a way I can force this application to run in 32-bit mode or something?

  • 16-bit games cannot natively run under 64-bit Windows. You'll have to use some kind of workaround. Apr 10, 2010 at 2:22

2 Answers 2


I would recommend you install a virtual machine of Windows XP

If it's DOS game, try DOSBOX


Long Mode, which is required to run a 64-bit operating system on a x86-class machine, does not support Virtual 8086 Mode, which is required to play old games. Use an emulator or a virtual machine instead.

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