Hey, I have my own 2DS modded/hacked for a long time, I mostly only play CTGP 7 on my own/online. But that is just a result of neglect over time. I just followed the guide to hack my nephews 3DS and so far only have CTGP 7 on it too, (I literally did it tonight) and looking for any games where we could play as part of a team, or against each other using mods or any multiplayer that is still available. I have to get him a larger SD card, as he only has 2GB card.
Are there many/any other games that we could still play locally? Or together online?