I use the original Telltale games from the website.
None of the ones I testet (Wallace and Gromit ep1-4, some of the Sam & Max episodes including ep1.1 and 3.1, Back to the Future ep1) works.
They all worked fine under Windows 7, Windows 8 tells me the programs are not compatible, right clicking and changing the compatibility options won't change a thing.
While Wallace & Grommit don't display anything, Back to the Future at least displays that the program crached if I start it in compatibility mode.
What can I do?
Is there any chance updated .exe Files will be released?