Android's gallery scans your SD and picks ALL the media content in there. That means it grabs videos and pictures used by other apps and shows them to you.

There is a way to stop that: you make a file (it doesn't matter what type) and name it ".nomedia" (without the quotes), with that the gallery will no longer pick up that particular folder (and any subfolder within); the only downside is that the app that created the folder -in this case, your games- probably won't pick the folder as well, so you might find some conflicts with that.

 

You could always try to set your own .nomedia file just to be sure. After that, extract the SD and insert it again (forcing a new scan from your phone) so that it can recognize the file and get them off your Gallery. I do remember that I had to re-scan the SD before folder that recently had their .nomedia file put in them to disappear from the app.

Good luck with your issue.

 

Yes I have exactly the same problem, it is caused bt Kies Air that does not respect .nomedia files. Hope somone will come up with fix soon.