Have you tried our latest SDK?
What errors are you getting specifically?
When I tried to build my project with visual studio 2015 (il2cpp), i got this error msg:
I have 5.6 version, and try to build for UWP and use IL2CPP .
I have few errors.
Look at screenshot
Does GameSparks support Universal Windows Platform for Windows 10? I cannot run an exported UWP build from Unity on a Windows 10 machine due to numerous DLL errors.