Multiplayer. Devs, read...

[Bootipool]

This game is actually the best digger / platformer game i've ever played. It is awesome. If you create SteamWorldDig 3 (or another name of the game) with multiplayer you'll probably get way more players. You know how to create great worlds. You are so good at it. You can arrange for multiplayer, like each player has his territory; he can give permissions to build at it to his friends; so friends can mine resources and find artefacts together. Co-op game would be great too. Selling stones/rares to real players; collecting them; upgrading your own world etc etc. Terraria is worse than this game at my opinion. Just keep it up. I think if you add multiplayer/co-op people will really like it...

P.S. sorry for leaving this message in "support topic". I really want devs to see this message. And then, you decide.