I'm assuming the "o," and "0," are attempts at a degree character?
75c does strike me as a "little" high for simply playing a game, especially for a 3770K attached to an H100i. What was your overclock on the CPU prior to? 65c on an Intel Burn test though seems normal, if not a little low for that kind of test. My 4770K almost melted to the board when I ran one of those on a ~4.4GHz OC attached to an H80i.
In any case those temperatures are perfectly normal for the CPU itself. As long as you don't top 80c for very prolonged periods of time, you should be fine.