Yep, moving apps to the SD card would help a lot. However, it increases the risk of the app being corrupted.Removing some games is the only option. I usually free up disk space by storing the apps on the SD card. And that works out just fine for me. You can also make sure to remove games which you are not actively playing. This way you can get some RAM and SD space for other games. I have tried that option and it seems to be working for me.