Also, in some games you can manually change the language in the game settings. I don't know if this works for Crush 3D or not but you should be able to find out easily enough.Wow! Thank you a lot! It works!
On that note, does anybody who uses HomePass have StreetPass enabled for Crush 3D? I've had the game for over a year now and enabled StreetPass and never gotten a single tag with it.