I have kids with SPD that cope by using gaming as well. Actually, Minecraft and Youtube are huge here. We camp frequently without internet and I have them load up their devices with games that can be played offline. I know Minecraft in creative mode is not as awesome as playing on a server, though. My kids (and hubby) have recently started up with BTD5 (it's a tower defense game) that can be played offline on the Appstore, and it's pretty addictive. Same with Spore (computer), which they also love. It might be worth finding some apps/games that can be played offline that he would LOVE. No Man's Sky looks like a mix between Spore and Minecraft and he might like it. It's new, so I don't know if it can be played offline or not, though. It's a computer game. I might be able to help you out with games he might like if you want, we are a huge gaming family here.