There's a Heartbleed Hit List on Mashable to inform users which of their online logins were potentially compromised by the Heartbleed SSL vulnerability, covering everything from social networks to password managers, though the only game they mention is Minecraft, which Mojang already addressed. There's also a list on Ars Technica of vulnerable Cisco products, and while Battle.net was not exposed to Heartbleed, Blizzard warns that you should change your password there if you're using the one you are using on an impacted site. Word is: "We want to emphasize that Battle.net's encryption was not affected by this vulnerability. However, if you use the same password on Battle.net that you use elsewhere, your Battle.net account could be at risk if those sites were affected by this bug."