Core Keeper

Core Keeper made it onto one of our LAN nights almost by accident, someone had it in their library, and we ended up digging tunnels together for two hours instead of starting the Age of Empires match we'd planned. The mining and base-building loop is genuinely excellent, and it scales up to eight players, more than almost anything else on this list allows. It sits at the edge of cozy rather than comfortably inside it. Bring backup. There are bosses down there, and a real risk of dying if you wander too deep without preparing. That harder edge is why it landed here instead of higher up the main list.

Core Keeper gets pitched as 'Terraria but underground.' The comparison is fair, but it's not just a clone. The scale is tighter, the biomes denser, and the boss fights are built with a group in mind from the start rather than bolted on. My LAN group hasn't adopted it the way we have Terraria, mostly habit rather than any real flaw, but online sessions felt more focused: less wandering, clearer direction toward the next boss. It supports up to eight players, more than most groups will ever use, and the shared base-building gives it the same long-tail appeal as its inspiration. It's a strong pick if your group already knows Terraria and wants something with a clearer sense of direction.

Core Keeper looks like a cozy game and plays like one for the first hour. Then you dig into a new biome without the right gear and something enormous and angry emerges from the dark, and you realise it has been a survival game the whole time. I tried this late one evening expecting to play for twenty minutes. An hour passed while I was still routing a food supply and trying to figure out why my torch placement was inadequate. That loop, where comfort and threat rotate around each other, is exactly what works well in portable sessions. Runs on the Deck beautifully, and the top-down perspective means nothing is ever unreadable.

Core Keeper surprised me. On paper it sounds like a mining game with survival elements tacked on, but in practice the underground world pulls a group in directions nobody planned. Someone starts farming, someone finds a cave system that goes somewhere alarming, someone else has quietly built a rail network nobody asked for. Up to eight players in a private session, dedicated server support, and light enough on system requirements that it ran without complaint on the older laptops in my group. The survival edge is softer than the entries above it, which is why it sits at four rather than higher, but for a LAN group that wants sustained progression without the harshness of Project Zomboid, it is close to perfect.

Core Keeper is what happens when you take the Terraria format and make it more immediately accessible to a group. The top-down perspective reads well on Deck, the co-op progression is genuinely shared rather than parallel, and the content depth is substantial enough to justify long-term sessions. It missed the top ten because it is online-only with no local option, and the Steam Deck playability rating is strong rather than excellent. For groups who want a long-running shared world to dig through, especially if Terraria's early-game chaos was too much of a barrier, this is the more welcoming version of that experience.