i dont think it would run

but if you have a pc, you can use moonlight to play roblox with your 3ds

We only have source code for 2016 and from personal experience I know a port to SDL had been made and a fork of SDL existing for the WiiU it could be possible tho I don't know about 3DS.

Static recomp could also be made if you want the latest app but Roblox doesn't work on 32bit devices anymore.

I saw one dude cover a way to get roblox on DS once. (It barely worked)