Phalanx Duel

Initialize Global Combat.

Phalanx Duel v1.1.0 is officially active. Deterministic tactical battle on a 4x2 grid. Zero RNG. Full cross-platform competition. Red protects. Blue attacks. Execute the briefing.

Enter the Duel Read the Rules

No account required. Logic is the only weapon.

  • [+] Vector: 0% RNG
  • [+] Open: Standard Deck
  • [+] Tactical: 4x2 Grid
LIVE_FEED_01
♠ A
ATTACKER
♦ K
FRONT RANK
♥ 7
BACK RANK
♥ LP
CORE (LP)

Command Console

Initialize a duel directly from this terminal. Zero setup. Full tactical depth.

Expand to Full Screen →

// Geometric Pressure.

We stripped away the RNG. What remains is a pure system of kinetic energy and structural integrity.

[01] 01. Formation

Your 4x2 grid is your survival. Every card is a tactical data-point. Deploy carefully to protect your line.

[02] 02. The Cascade

Damage flows front-to-back. Choose between **Classic Mode** (Equal/Greater attack) or **Cumulative Mode** (Carryover damage).

03. Determinism

[03] 03. Determinism

Identical inputs. Identical outcomes. Your victory is not a roll of the dice; it is mathematical inevitability.

Enter the Combat Lab →

WELCOME TO PHALANX DUEL

// WHAT IS THIS

Phalanx Duel is a strategic card game I invented with a plain deck of playing cards and some friends willing to give it a try. Now it's on the web — same core concept, online multiplayer, and a few things a physical deck can't do.

// A NOTE FROM THE CREATOR

This is a labor of love. I built Phalanx Duel because I wanted to share something I genuinely enjoy with more people — and because building it has been its own reward. It's not done, but I feel good about where it is. Your feedback, patience, and willingness to play an unfinished game means a lot. — Mike

// CURRENT STATUS

  • Core gameplay: Stable and playable
  • Spectator mode: Watch and stream live matches
  • Ladder & ELO ranking: Live, in BETA
  • Matchmaking: Nascent, being built out
  • Overall: Early access, still working out kinks

// SECURITY NOTE

Do not reuse a password here. This is an early-access game, not a hardened production service. I will do my best with your data, but please use a throwaway password.

// JOIN & PLAY

Create a free account to track your rating on the ladder, build your match history, and get ranked as the game grows. Guest play is available, but registration locks in your progress.

Launch Match Read the Rules

Terminal Operative

Battle from any command line. Our official Golang client provides a high-performance terminal experience with full session re-entry and OTel observability.

Competitive Ladder (Beta)

Climb the global Glicko-2 rankings. True cross-platform play across Web (all screens), CLI, and Mobile (SwiftUI in-progress) operatives.

The Death of Luck

In Phalanx Duel, there are no coin flips. Identical inputs produce identical outcomes. Every combat result is hashable, verifiable, and mathematically inevitable. Your victory is yours alone.

Read the System Philosophy or Analyze the Math .

Submit Debrief

Phalanx Duel is in active playtesting. Your tactical feedback is critical to the system's evolution.

  • Found a bug in the cascade math?
  • Discovered a dominant strategy?
  • Have a proposal for a new suit mechanic?
Report Bug (GitHub) Join the Discussion

Ready to Duel?

Initialize match. Share link. Start the duel in seconds.

Start Match Read the Rules

// Free. Fast. Fair.