It’s undoubtedly been one of the most beloved isometric RPGs of recent years, and even though I’d already announced the sequel here some time ago, today the game’s Steam page has gone live, along with a gameplay trailer and plenty of new details.
Stygian Software has launched the Steam page for UnderRail 2: Infusion, confirming the post-apocalyptic sequel is coming to PC.
The studio also published a new 10-minute gameplay video and reiterated that it intends to enter Early Access, with creator Dejan Radisic estimating roughly a year and a half of work before it’s ready, an estimate, not a promise.
Infusion remains an isometric, turn-based RPG set in the metro-bound Underrail. You play a scavenger starting in the hidden city of Solidon, moving through station-states to pick over the ruins for tech and supplies.
The Steam page outlines a clear systems focus: atomic turn-based combat where your short actions hand a slice of time to enemies, allowing for immediate counters and simultaneous NPC movement in crowded fights.
Implemented weapons already include pistols, bolt-action and assault rifles, a plasma rifle, plus knives, one- and two-handed swords, and sledgehammers, each with stances and special attacks. Psionics are slated to return later.
Under the hood, Stygian has shifted from a purely tile-bound engine to a voxel-based space, adding real verticality, stacked platforms, climbing and falling, and even flying enemies, then rebuilt visibility, lighting, and AI to suit.
Recent engine work adds shadow maps, specular lighting with screen-space reflections, and interactive liquids that slow or damage characters and enable level logic like raising and lowering fluid levels.
NPCs follow daily schedules and pursue their own tasks; creatures can migrate and invade areas in response to events. Crafting is deeper and more visual: firearms are built from base components and then modded with attachments; armor rigs combine materials and pockets; you can skin creatures for hides and harvest organs for chems.
The new “tinkering” approach pushes hands-on interactions, mechanical locks you actually pick, and workbenches you operate.
Several subsystems have been rebuilt. Inventory now uses an 8×8 “tetris” grid, with backpacks and pouches adding separate compartments that can be dropped and reclaimed as one bundle.
Trading keeps UnderRail’s supply-and-demand flavor but moves to gradual restocking, time-limited discounts or markups, and fully physical shop inventories for would-be thieves to actually locate. Currency expands to Stygian Coins/Chips, United Stations Dollars/Dimes, and heavy “Cerberus Bars” for big purchases.
Computers are no longer flavor text. Infusion simulates a simple OS and command shell you can use to read logs, operate doors and machinery, install software, share files with NPCs, and perform hacks that consider both your tools’ versioning and your skill.
Lockpicking is a manual interaction with different real-world lock types, tools, and readable cues, designed to reward knowledge rather than a single skill gate.
On the equipment side, Stygian has shown how weapon families diverge in cost, availability, reliability, and upkeep. A cheap, never-jamming bolt-action rifle can carry the early game but fires slowly; a late-game plasma rifle melts targets, then cools down and demands rare components and maintenance.
UnderRail 2: Infusion is in development for PC via Steam with English support listed; no other platforms are announced. Players can wishlist now while Stygian continues production toward an eventual Early Access launch. Below is the new 10-minute gameplay trailer.
