The Humble bundle tomb raiders games works on Windows 8.1?

gimme some min downloading to find out

Yes, they are supposed to work even on Win10 after they were a little fiddled around in the code to support modern hardware and systems. Plus I don't see any modern hardware guide on Steam, only tips on how to make the game recognise controllers.

ok i'm on w10 and the game started fine and is playable at least teh begining is, so should work on w8 too but ...i can't use the mouse xP

Been playing the GoG version of TR 1 on Windows 8.1 without any problems but I recommend using a controller and JoyToKey to remap your keyboard bindings.

Thanks for your answers. I have XBOX 360 Control for PC.

About Tomb Raider 1 i've created a remap for Controller Companion at Steam http://steamcommunity.com/sharedfiles/filedetails/?id=583979589

Layout is like PSX