Game · Released

BANNER PROTOCOL

Command a fractured coalition in a retro-futurist roguelike deckbuilder. Build a 4×4 formation, combine rival factions, intercept enemy signals, bribe incoming attacks, and carry the BANNER core to the Helios Crown Array.

Release date
October 1, 2026
Platforms
Windows
Developer
OkoYan
Publisher
OkoYan
BANNER PROTOCOL artwork
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About BANNER PROTOCOL

Command a fractured coalition in a retro-futurist roguelike deckbuilder. Build a 4×4 formation, combine four rival factions, intercept enemy signals, bribe incoming attacks, and carry the BANNER core to the Helios Crown Array.ABOUT THIS GAMEBANNER PROTOCOL is a tactical roguelike deckbuilder set in a dying retro-futurist empire. Your courier, STARLING-12, has crashed on Halcyon-9 carrying forbidden cargo: BANNER, a military intelligence capable of seizing the Crown’s command network. To complete its final broadcast, you must assemble an unlikely coalition, survive seven hostile armies, and break through to the Helios Crown Array.BUILD YOUR FORMATIONDeploy units, artifacts, and support cards across a 4×4 tactical field.

Position matters: every card contributes attack, wealth, defense, and faction effects that can reshape the entire formation.COMBINE RIVAL FACTIONSChoose an operator and recruit cards from four distinct factions:Vectari — reliable units and balanced formationsFerrum — powerful artifacts and resource enginesAetheri — adaptive combinations and tactical utilityKharvox — aggressive pressure and high-risk powerMix their strengths, manage their rivalries, and create a coalition capable of surviving the route ahead.INTERCEPT THE ENEMY SIGNALEvery opponent broadcasts its next attack. Accept the incoming damage, spend gold to jam the signal, or hijack the command entirely.

A carefully timed override can save your formation—but every bribe leaves fewer resources for cards, rerolls, and relics.ADAPT AFTER EVERY BATTLEClaim new cards, secure powerful relics, modify your deck, and decide how much of your limited supply to risk.…

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BANNER PROTOCOL artwork
BANNER PROTOCOLSteam · Game · Available
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BANNER PROTOCOL reviews & player comments

Store ratings and available player reviews. Review snapshots show their last refresh date.

★ 8.3/10Steam · 6 ratings
SteamLast checked November 1, 2026

Most helpful2

Recommended
Played this game for fair bit of time and can tell you that I liked it. At first it might be confusing, but game keeps…
Recommended
Good game, but feels like a little unfinished! like the concept.

Most recent5

Recommended
Played this game for fair bit of time and can tell you that I liked it. At first it might be confusing, but game keeps…
Recommended
Good game, but feels like a little unfinished! like the concept.
Recommended
Really fun to mess around with different builds and find synergies that work well together. Always makes me want to try one more combination.
Recommended
The build system is easily my favorite part of the game. There’s a lot of enjoyment in trying different combinations, figuring out which choices complement…
Recommended
Really enjoyed the build mechanics and the variety of synergies. Experimenting with different combinations is satisfying, especially when everything clicks and a build really comes…

Short excerpts linked to their source. The score above uses aggregate storefront ratings—not these few comments.