Excidium II
Self-Ejected
The combat is a disaster, it doesn't work in real-time and is even worse in turn-based.But it didnt fail, biggest criticism you can elevate about the combat is that its not balanced.
What makes it tolerable at all is that the terrible balance lets you go through any combat event in RT with minimal player intervention required.
Also NWN2 might be terrible but it's still way better than Arcanum in this department, and gothic shouldn't even be in this discussion.