German: g vs. g

Hey guys, can anyone tell me how to figure the pronunciation of “ig” at the end of a German word? I had been doing it like “ich” in all cases, but I watched a video where a guy (Rainer Joswig, the Lisp programmer, as it happens) pronounced his name like “ik”.

Have I been doing it wrong, or is this just dialectical?

Well most people pronounce it "ich" in everyday speech, so if you do it like that, it's fine.

Some words like "Honig", "König", etc. just sound really strange when pronounced "ig".