I dont know much about this game mode. just a while i started using bitdefender internet security trial. So i switched to the gaming mode(well after upadating) to test against malwares. it detected all 4 viruses except one which has a embedded viruses within. so the virus got activated . then i scanned the c drive it detected that virus but couldnt disinfect or delete it.I think safe mode scan will erase that. But what will be the protection with gaming mode on? i really like this game mode concept cause i always have some heavy works on my system.but i think it has to be a bit more developed to prevent these type of malwares. Meanwhile its running as smooth as avira on my system(surprisingly). I think its because of my 2gb RAM, whatever its running well consuming 5 to 10 mb of RAM(4 processses).