Inferno Protocol Maze Layers

Early Access Inferno Protocol is not one corridor with a filter. It is a circular, multi-versal stack. Tektonic’s Steam FAQ at the 28 August 2026 start named three playable layers: Junkyard, Jungle, Swamp. Press copy talked about deserts and frozen halls as places that should not be underground. A later studio post put Winter in September, Desert in December, and an unnamed drop in April. This page is how those biomes feel to walk, plus the cave interiors and generator mechanics that shape layer access.

The generator and night gate system

A key discovery in Early Access: generators control layer gates. This day-night cycle mechanic affects how you move between layers:

• When generators are ON: Layer gates stay open, allowing free transit between Junkyard, Jungle, and Swamp.
• When generators are OFF (night): Layer gates close, restricting movement between layers.

This creates a strategic planning element for multi-layer expeditions. Before planning a trip across multiple layers, check the generator status and plan your route accordingly. The wrist watch item shows the current time and helps you track day-night cycles.

Official Inferno Protocol demo clip — co-op maze survival

Junkyard — Ground Floor

Achievement: Ground Floor (Junkyard Layer). This is where most squads should spend the first weekend. Work lights, containers, rust, humanoid walkers with locational hit reactions. Spray contrast is high. Shotguns and brass knuckles earn their keep in interiors. Some buildings hold creatures by day and empty at night — a loot window, not a parade route.

Junkyard teaches the product: a corridor you used may not exist on the way home. Plant bear traps on chase lines. Light wall torches on verified routes back to the settlement. The trash eater (crocodile-like) shows up as a feeding puzzle: dynamite or grenades, then back off. Do not stand on the reward pile. See combat.

The September 2026 patches fixed Junkyard object and collision issues throughout the layer.

If you cannot loop Junkyard and return, you are not ready for Jungle foliage.

Jungle — Getting Warmer

Achievement: Getting Warmer (Jungle Layer). Foliage, low visibility, tree-line silhouettes, glowing-eyed stalkers near humming devices, plant-like hallway horrors in torch rooms. Jungle caves are a new interior type added in the major demo content update. Cave interiors are explorable areas within the Jungle layer, with their own navigation challenges and potential loot.

The September 2 hotfix specifically fixed issues occurring at the cave interior exit — making Jungle caves fully traversable.

Noise is a tax. Official art puts katana and crossbow here for a reason. A six-stack shouting in proximity chat turns A-tier stalkers into a wipe. Walkie-talkies exist; the co-op guide is not optional in this biome.

Tree LODs and grass already ate demo-era performance work. Host on a recommended GPU. Night vision injectors help dark peeks; torches help the squad more than they help stealth. Pick a doctrine per room. Do not rage-inject and sprint an unmarked seam.

Swamp — Deep Enough

Achievement: Deep Enough (Swamp Layer). Wet, torch-dependent, fire barrels that rain can kill. Sound travels. Whisper. Cooking tables under roofs beat barrels. The crafting rain rule is a Swamp rule. If you learned Junkyard on open mics, Swamp will educate you.

The September 2026 hotfixes addressed Swamp layer exit issues and loot problems, making the Swamp layer fully navigable.

Swamp is where unlabeled injectors start to look tempting. That is a trap with extra steps. Read injectors before you mainline glass because the water looks endless.

Cave interiors — new in Early Access

The major demo content update introduced cave interiors to the Jungle layer. These are enclosed spaces within the Jungle biome that offer different navigation challenges:

• Navigation: Caves have their own layout and may not follow standard Jungle lighting. Bring torches.
• Loot: Cave interiors may contain unique loot tables not found in standard Jungle corridors.
• Exits: The September 2 hotfix fixed cave interior exit issues. Previously, players could become stuck trying to exit caves.
• Strategy: Use the same mark-and-verify approach as the main maze. Do not assume cave paths stay consistent.

The Worm Teleporter can be useful for navigating cave interiors or escaping if you get stuck. See the Worm Teleporter guide.

Winter, Desert, and the unnamed April drop

Tektonic posted a public Early Access calendar: Winter in September, Desert in December, something in April they were not ready to show. Steam’s questionnaire still says four more biomes across remaining layers over roughly nine to twelve months. Achievement Rock Bottom (Winter Layer) matches the ice promise. None of that makes Winter playable today.

When a layer ships it will be Steam news first, then this page, then the roadmap. Until a patch note names it live, do not rearrange your weekend around ice or sand.

Seams, shifts, and how to not lose home

Biome seams are where people lose the settlement. Slow down. Your Junkyard glyph still works in Jungle if you keep the shape, but your eyes will not. Drop a unique object at the seam. Notebook the time on the wrist watch. If the corridor behind you is gone, that is the maze, not a bug — unless you fell through a floor, which launch-week reviews also reported. Then check the last bed, not the abyss. Settings and patch notes if geometry is eating stashes.

Day-night is a layer inside a layer. Wrist watch on. Some interiors empty at night. Schedule the loot. Do not kick a noon door in a packed Junkyard shack and call it exploration.

Generator timing: Check generator status before leaving a layer. If generators are about to turn off (night approaching), you may need to rush your current objective or find shelter until morning.

Loadouts by biome, not by identity

• Junkyard: shotgun, handgun, knuckles, barrels, traps.
• Jungle: katana, crossbow, dual blades, quiet traps, night vision if you loot dark. Cave exploration: extra torches and the Worm Teleporter.
• Swamp: traps under roof, explosives for grouped threats, fewer barrels in rain.

Rankings: weapons, enemies. A kit that is S in Junkyard interiors is a flare gun in Jungle brush.

Walk one biome until the return trip is boring. Boring is how you notice the exit language on the walls.