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Cardero Protocol

The Quiet Line: Tower Defense
Calebry Technologies Inc · Games
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Cardero Protocol is an iOS game by Calebry Technologies Inc, released on Oct 27, 2026. The current version, 1.0.0, came out 14 days ago. It has no ratings yet. It is free to download and has no in-app purchases.

App info

Developer
Calebry Technologies Inc
Category
Games, Strategy, Action
Released
Oct 27, 2026
Version
1.0.0 (Oct 27, 2026)
Price
Free
Size
632.9 MB
Requires
iOS 15.0
Age rating
13+
Languages
English

In-app purchases

none
Current prices, App Store US.

About Cardero Protocol

Humanity fought the Cadence, and humanity lost. Now the last colony is leaving, one island at a time, and someone has to hold the road until the boats are gone. You do it with Cierra, the AI humanity boxed up when the war began. Admiral Cardero opened her box last night. Few trust her yet. HOLD THE LINE • Ten islands, each with its own roads, cliffs and harbour • Build on stone foundations: Wardens for ground units, Hail against aircraft, Iron for armor, Sunder for packs on the road, and Kestrel outposts that extend where you can build • Upgrade, retarget and sell between waves; call a naval barrage or a flare when the line bends • Every breach costs people. Save everyone for three stars. A STORY TOLD BY THE ONE NOBODY TRUSTED • Cierra briefs every island in her own voice and calls the waves on the radio • The evacuation runs from Farwatch to Last Light PLAY YOUR WAY • The first island…
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