Conquer the Arena for Gold and glory in this FPS Party Game! 50+ Weapons of classic Arena Shooter action fuse with comeback Item Boxes and the card-based Party Mode, where weapons unleash their awesome Plus-Powers and stacking Modifiers like Infection and Juggernaut change the game.

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Download C4: DEMO

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Planned Release Date: 2026

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Online Disclaimer

Classical Caliber Combat Contest has been developed with a client-authoritative network model. This means user inputs are instantly responsive and the experience will be smoother when players would normally experience issues with latency or lag. This decision was made by the Secret Handshake team after weighing multiple tradeoffs, choosing to prioritize game feel and groups of friends playing together over strict game security measures inaccessible to a small team.

Given that C4 is client-authoritative and contains public matchmaking options, Secret Handshake has taken steps to secure the online experience. This includes implementing community-driven moderation tools that integrate with Quickplay and the Server Browser.

It is our intention to be honest about the challenges of publishing an online multiplayer game, and continue to provide solutions to these issues.

Secret Handshake Interactive is brought to you by players like you.

Thank you.

About This Game

Classical Caliber Combat Contest is the "Arena Shooter Party Game" where classic action meets Item Boxes, Stage Hazards, Minigame rounds, loads of Weapons, Modes and Modifiers, and the card-based Contest party mode!

Cards build the Match! Complete Missions to score Points, then cash them out for Gold in wild Minigames that happen during the action. When each round begins in the Lobby, select which card packs to open and level-up Cards. Build and play a strategic hand to attack and defend against other players, serting up the next match to the advantage of your selected Missions and play style. Don't get too comfortable at the top of the scoreboard, as a bit of bonus Gold at the awards ceremony might just swing the results!

  • Duplicate Cards combine and level up, making them harder to remove from the Board

  • Weapons gain lethal bonus stats and reactive Plus-Powers as cards levels up

  • Minigame events like the Gold Boss provide the opportunity to turn Points into Contest-winning Gold

  • Select from a variety of Missions that compliment your play style and influence your packs

  • Modifier Cards add stacking rules like "Infection" and "Floor is Lava" that flip the match on it's head

Construct your personal Arsenal from an enormous collection of weapons, including FPS classics and novel inventions. Alt-fire modes, bouncing projectiles and more make each weapon a distinct implement of mayhem. Will your favorite be the classic Rocket Launcher? Or do you prefer the crushing strength of the MEGA Shotgun?

  • Bullet weapons are well-rounded, like the adaptable Burst Rifle

  • Shell weapons are specialized, like the bouncing shotgun Slag Launcher

  • Voltage weapons are technical, like the precise Lightning Ray

  • Explosive weapons launch targets, like the classic Rocket Launcher

  • Radiation weapons break the limits of power, like the disgusting Bio-Blower

The Announcer narrates every point of action in the Arena, with more than 80 multi-kill, shutdown and special event medals to call and award. Battling across maps covered in dynamic stage hazards, a cast of computer-controlled characters fight alongside human players. With unique appearances, skill levels and text chats, invite the strongest bots to your Contest if you dare!

Classical Caliber Combat Contest contains:

  • 50+ powerful weapons across six ammo types

  • The Announcer, fully-featured with 80+ Medals to call and award

  • Free Play and Party mode offering fully custom and replayable experiences

  • 20+ impactful Items, including the Grapple Hook, Bowling Bomb and Auto-Missiles

  • 8 unique Maps, each with four layouts to accommodate 2-12 players

  • Fan favorite Modes: Deathmatch, Capture the Flag, King of the Hill and Zone Control

  • 30+ game-changing Modifiers, including "Infection" and "Floor is Lava"

  • 12 unique NPC bots, skill range "Incompetent" to "Unbeatable"

  • Deadly stage hazards and interactive elements integrated on every map

Additional Features

  • Host your own public or private matches with extended admin tools

  • Use Quickplay and the Server Browser to find the perfect public game

  • Vibrant comic-book visuals depicts custom ArenaBots in action, in the Lobby, and on billboards!

  • Earn free playtime crates to unbox and trade a variety of cosmetic weapon skins

  • Accessibility features get new players up to speed with genre staples and new mechanics

Secret Handshake Interactive is brought to you by players like you.

Thank you.

System Requirements

    Minimum:
    • Requires a 64-bit processor and operating system
    • OS: Windows 10
    • Processor: AMD Ryzen 5 5600 or equivalent
    • Memory: 4 GB RAM
    • Graphics: Nvidea GTX 1060 or equivalent
    • DirectX: Version 10
    • Network: Broadband Internet connection
    • Storage: 4 GB available space
    Recommended:
    • Requires a 64-bit processor and operating system
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