
SIGNAL: Merge Protocol
A merge mystery in deep space
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Free
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About
A distress call. A dead research station. One survivor who won't give up.
Deep in space, the station has gone dark — its crew missing, its systems failing. You answer the signal alongside Freya, and the only way to bring the station back to life is to MERGE.
Combine items on the grid to craft better ones, restore each module of the station, and power the mystery back online piece by piece. Every merge pushes the story forward.
— MERGE TO REVIVE —
• Drag and combine items to evolve them through satisfying chains
• Repair the station module by module: comms, command, engineering, life support, the power core and more
• Unlock deeper sections and discover new item chains as you go
— A STORY WORTH UNCOVERING —
• A voiced, cinematic sci-fi mystery told across multiple chapters
• Piece together what really happened to the crew of the station
• Every module you restore reveals another fragment of the truth
— BUILT TO RELAX —
• Solve at your own pace — no timers on the puzzles
• Moody, atmospheric sci-fi art and sound
• Play in short bursts or lose yourself for hours
— FREE TO PLAY —
• Enjoy the full story for free
• Optional in-app purchases to speed up your progress — never required to finish
Answer the signal. Restore Helix-7. Uncover the truth.
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What's New in SIGNAL
1.0.6
August 19, 2026
• Fixed an issue where withdrawing an item from Cargo could make it disappear if a duplicate item was vanishing at the same moment • Stability improvements
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In-App Purchases
$0.99
10 Cores
A pouch of 10 Cores




