Cloudflare R3 might suit the scenario better for you in terms of the heavy assets, it's like AWS S3 except for the cool part where you aren't charged for data egress (last I checked! haha)
I'm about to buy Terraria after all these years, just so I can get the assets and check this out. You're cool :)
Oh Terraria is totally worth it, especially when spelunking with friends.
Its better than Minecraft, in my opinion.
R2