Can you ever be too safe? I mean, who's to say you couldn't get a virus from online gaming. I installed Cyberdefender last year and really like it. The free version had some annoying, so I got the $24 upgrade and have been very happy with it. I have not had any problems/viruses since I installed it, but it did clear a few malware that tried to infect my system.
I also like the MyIdentityDefender that is a toolbar on my IE that tells me when a site or google link my be risky. This would give you a heads up before you even go to the site.
Best of luck to you, and happy gaming.