Underrail: Expedition

I've spent a lot of hours in games that promise an underground world and deliver a corridor. Underrail: Expedition is not that. When the base game finally opens a path to the Black Sea - a massive subterranean body of water the locals call Hell's Gut - the atmosphere shift is immediate and genuinely unsettling. The tunnels you know are gone. Suddenly you're on a boat, squinting at dark water, and the music changes in a way that makes your shoulders drop involuntarily. Stygian Software built something here that feels earned, not packaged. Mechanically, Expedition slots into the base game mid-run, accessible roughly around level 12 onwards, so new players will need to finish a solid chunk of the base campaign before any of this unlocks. What you find when you arrive is over a hundred locations spread across islands, ruins, pirate strongholds, and pre-apocalyptic laboratories left behind by a faction called New Frontier Technologies. The lore buried in those ruins is the expansion's secret weapon. Oldfield's archaeology-flavored quest chain slowly pulls back the curtain on why the Black Sea has been shunned for generations, and the answer lands harder than most indie RPGs manage. The Oddity XP system, which rewards exploration over grinding, fits the Black Sea perfectly - every crumbling facility and flooded ruin has something to find, some fragment of history that quietly reframes everything. Two new factions share the water: the Grim Jetters, a pirate outfit controlling the southern reaches, and the Sormirbæren, serpentborn natives holding the north. Neither is a simple enemy faction, and the faction-play around them adds genuine decision weight. On top of that, Expedition raises the level cap from 25 to 30 and layers in new weapon types, fresh psionic abilities, and a Naval Combat feat you can learn at the expedition camp. Character builds that were already deep in the base game get more room to breathe. A stealth-psi hybrid plays very differently from a crossbow specialist here, and both are valid. The turn-based combat still demands careful positioning and resource management; the Black Sea fauna in particular is not forgiving, and the ruins inside NFT facilities have checkpoints you do not want to miss. The camp management system is where the expansion stumbles. Your base of operations can be raided by Sormirbæren forces up to five times depending on your progress, and the mechanics around supplying and defending it are poorly explained and, frankly, feel unfinished. You will scout massive locations full of salvageable gear and have no meaningful way to redirect those supplies to the camp. It creates an artificial urgency that nudges you into rushing content you should be savoring, particularly in the final third. It is the one place where the handcraft that defines the rest of the expansion feels like an afterthought. Lean into it anyway. Accept the jank. The payoff waiting in the deepest ruins is worth the friction. This expansion is for the patient, the build-obsessed, the people who read every terminal entry. If you gave up on Underrail before reaching Core City, this is not going to convert you. But if you finished the base game and ached for more of its particular brand of quiet, oppressive world-building, the Black Sea is almost exactly what you wanted.

Kai · Scout Team

Indie & narrative

Be the first to comment on Underrail: Expedition.