Make sure before you release your deeply, abidingly fun game on the public that you test to see if it's functional with Microsoft's handicapped access StickyKeys utility enabled. If its not compatible, do not release your game because you've just fucked over the folks who are working hardest to play your game that you've undoubtedly designed for all ten fingers on the keyboard anyway.
Insult to injury is not fun.
I'm looking at you, NetDevil and Pandemic.
Oh, yes, and if you have an online tech support interface, be sure that it doesn't throw an ugly error when someone tries to submit an issue.
Like this one:
Internal Server Error:
Server id: 13->3
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the site's support team and inform them of the time of the error and what operation
you were performing when the error occurred.
Thank you for your patience.
Is it really that hard to run a decent support architecture? Really?