
Steam & Bullets
Merge Tower Defense on Rails
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About
STEAM & BULLETS
Defend a moving train across a ruined world. Spawn defenders, merge them into unstoppable units, and survive wave after wave of raiders, climbers, brutes, and drones or watch the locomotive fall.
MERGE TO WIN
Tap to spawn random defenders on your 3×3 wagon grids. Drag identical units together to merge them into stronger, deterministic level-ups — no random type switches. Stack up to Level 5 for game-ending firepower.
BUILD YOUR CREW
Gunners -> reliable DPS on every wave
Snipers -> long-range burst elites
Flamethrowers -> short-range area burn
Shields -> absorb hits and protect the grid
Bombers -> slow fire, massive splash
DEFEND THE TRAIN
Three wagons. 27 cells. One locomotive. Each wagon has its own HP bar — let it burn and every defender on it is lost, enemies
march through the husk, and your merge space shrinks. If the locomotive falls, it's game over.
PATCH & PREP BETWEEN WAVES
The train never stops. Between waves, spend scrap on:
Repairs to restore wagon HP
Armor plates & spikes to harden defenses
New wagons for more merge space
Locomotive upgrades -> HP, ram, speed
One-shot abilities -> airstrike, shield burst, EMP
WASTELAND ENEMIES
Raiders flanking on motorcycles
Climbers boarding and marching for the engine
War-rig brutes crashing through armor
Drones flying straight for the locomotive
Swarms that overwhelm by numbers
Unique bosses on every route
KEY FEATURES
Deterministic merging — strategy over RNG
Dual-phase gameplay: combat + upgrade shop
Dramatic loss spirals — every cell matters
No forced timers — you choose when to trigger the next wave
Portrait, one-handed, 2–5 minute runs
The rails stretch on. The horizon is on fire. Patch your wagons. Prep your crew. Keep the train moving because stopping means dying.
Download Steam & Bullets. Defend the rails.
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What's New in Steam & Bullets
1.0
May 6, 2026





