That's because Riddick just came out for PC a few days ago. There will be many more positive reviews guaranteed. Just for the record, I don't think Riddick is better than HL2 BUT I do not hesitate to mention them both in the same breath as far as how the games are as a whole. If I were going to review them both I'd end up giving HL2 a 97 (minus 3 points for all the hassle Steam gave me on Release day but however I do think they redeemed themselves)...I'd give Riddick a 95 (minus 5 points for no multi). Nonetheless, for $30 CoR is definately a incredible buy.
"When all thats left is console gaming, I will game no more."