[Update]: Terraria and Core Keeper are doing a small crossover to celebrate Terraria's upcoming Labor of Love update.

Freshly released into Steam Early Access, Core Keeper is a mining, crafting and exploration based sandbox game. As you might imagine from that description alone, most of your time in Core Keeper will be spend mining for resources and treasure, fighting monsters and exploring a procedurally generated underground world, as well as crafting new equipment and building up your base to help make yourself feel at home in the depths.

All of this can be done in either singleplayer or multiplayer with up to 7 other people, with the latter definitely being the more entertaining option. What Core Keeper looks like in action, however, that you can get a pretty good idea of through the recently posted trailer. Have a gander:

Before you get too excited, it's worth mentioning that Core Keeper is still unfinished and is expected to remain in Early Access until the end of 2022. Future updates will add things like new biomes and enemies, more items to find and craft, additional gameplay and story mechanics, as well as the usual batch of balance changes and tweaks. So if you're looking for a fully polished experience with plenty of content, it might be a good idea to give the Core Keeper team a few more months.

On the other hand, if you want to give the developers a hand and don't mind ignoring a couple of flaws in order to get in on the action early, you can find out more about Core Keeper over at Steam. Have fun!