Subway Invasion launches on Steam on April 3, 2026, published by indie.io and developed by QH Studios. It's a wave-based shooter set in the tunnels beneath New York City, where a single security guard stands between an alien invasion and a trainload of passengers.
The setup is lean and immediate. You're a subway security guard, not a soldier, not a spec-ops operative. You carry a pistol with limited ammunition and you're responsible for a train full of terrified civilians when extraterrestrial attackers start pouring through the underground. There's no cavalry coming. The passengers can't help themselves. You are the entire defence, one person with a sidearm and whatever you can scavenge from the tunnels around you.
Combat plays out across the tight corridors and platforms of the subway system, and the confined space shapes everything about how encounters unfold. Ammunition is scarce enough that every shot carries weight. Between waves, you scavenge for supplies while the pressure builds, locking doors to funnel enemies through chokepoints and fortifying positions around the train. The station itself becomes a tool: controlling where aliens can and can't go matters as much as your aim, turning the environment into something you actively work with rather than just fight inside.
Enemies arrive in escalating waves, and their behaviour shifts as the invasion deepens. Early attackers rush straight at you, but others start targeting the train's defences directly, splitting your attention between protecting yourself and protecting the passengers. As waves progress, aliens grow faster, stronger, and more aggressive, eventually turning weapons against you. The escalation forces constant adaptation. A strategy that held the line three waves ago starts cracking under new pressure, and the scarcity of resources means you can't brute-force your way through mistakes.
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Points earned from eliminating enemies feed into an upgrade system that expands your options over time. Weapon attachments like scopes, flashlights, and thermal sights improve the pistol's effectiveness in the dark underground environment, while sub-weapons such as grenades give you tools for dealing with clusters of enemies when ammunition alone won't cut it. The upgrades don't transform you into a one-person army so much as they give you slightly better odds against a threat that keeps outpacing you.
Subway Invasion leans into the tension of scarcity, where counting bullets and choosing when to hold position versus when to push forward creates a rhythm that tightens with each successive wave. The subway setting keeps everything close and claustrophobic, with no open ground to retreat across and no distance to buy yourself breathing room.