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Classical Caliber Combat Contest is the "kart racer of arena shooters" where old-school movement and weapons meet party game elements like stage hazards, comeback items and a cast of challenging NPC bots.

Wield an enormous collection of weapons against your enemies, including arena shooter favorites and totally new creations! Punchy feedback, striking visuals and unique sound effects make each of the 50+ weapons a distinct tool of mayhem. Will your favorite be the classic Rocket Launcher? Or do you prefer the overloaded power of the Shell Compactor?

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

  • Shell weapons are specialized, like the hybrid-shotgun Scrap Blaster

  • Voltage weapons are technical, like the precise Lightning Ray

  • Explosive weapons damage and push targets, like the classic Rocket Launcher

  • Radiation weapons possess unbelievable power, like the chaotic Bio-Blower

Each match has a five-weapon arsenal, one for each ammo slot. These weapons appear as pickups on the map, with spawn timers for stronger weapons. After the match concludes players have a short time in the Lobby to collect and play Cards, which level up, override and defend against each other to build the next match.

  • Duplicate Cards combine and level up, making them harder for other players to remove

  • Modifier cards change the game with wild rules, including Floor is Lava and Infection

  • Utility cards change the entire board, like clearing Modifiers or removing every top card

  • The rare "Mutated Mania" pack adds powerful weapon to everyone's default loadout

A cast of computer-controlled characters fight alongside players by navigating the arena, collecting pickups, and shooting weapons like a "real" human. Each of the 12 distinct characters comes with a unique appearance, skill level and text chats - NPC opponents aren't afraid to gloat about a kill! Invite the strongest bots to your Contest if you dare, as they possess incredible reflexes and aiming abilities.

Classical Caliber Combat Contest contains:

  • 50+ powerful weapons

  • 15 impactful Items, including the Bowling Bomb, Boombox and Versus Sensor

  • 12 distinct NPC bots, each with a custom appearance, skill stats and chat messages

    • Blank "ArenaBots" available if you just want more to shoot at.

  • 8 unique Maps, each with four layouts to accommodate different game sizes

  • Fan favorite Modes, including Deathmatch and Capture the Flag

  • Free-for-All, 2-, 3- and 4-Teams supported by all Maps and most game modes

  • Game-changing Modifiers like Infection and Floor is Lava

  • Stage hazards and interactive elements add chaos and tactics to combat

    • Knock players into Death Pits or Grinders for an instant kill

    • Touch an Electric Wall for a zap, or bounce certain Items to supercharge them

    • The Mutator Barrel changes based on how it is destroyed

      • Bullet weapon damage creates a simple, high-damage blast

      • Explosive weapon damage sucks in nearby players for an easy follow-up

      • Stage hazards also interact uniquely with the Barrel!

Additional Features

  • Unique comic-book vibrant visual style

  • Customize your ArenaBot's colors and face. See them in the Lobby, and on billboards!

  • Accessibility features get new players up to speed faster

    • The Spawn List shows when weapons and powerups are about to appear

    • Performance-distributed items like the MEGA Sensor help players mount a comeback

    • Armor Stacks increase the defenses of underperforming players

  • Join and invite players directly from the Steam Friends list

  • Share a Game Code to easily connect without being friends

  • Enter a Station ID to join a random online game hosted using that ID

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

Thank you.

C4: Classical Caliber Combat Contest
Secret Handshake InteractiveDeveloper
Secret Handshake InteractivePublisher
July 2025Release
🎹🖱️ Keyboard + Mouse
🕹️ Partial Controller Support
🎮 Full Controller Support
No user reviews (0 reviews)
Performance Fixes, New Weapons + Modes in the C4 Multiplayer Demo v2.0!

The C4 Multiplayer Demo has been updated to version b28_2.0! This update includes new trial weapons, a game mode, multiple Modifiers, performance fixes, and general game improvements.

Content

  • Weapon: Burst Rifle

    [list]
  • This Bullet weapon demands precision with it\'s three-round burst and high headshot multiplier, but can deal large amounts of damage if kept on target.

    [/*]
[/*]
  • Weapon: Incinerator

    • This flamethrower-type weapon burns Shell ammo to unleash a barrage of short range fire blasts. What this weapon lacks in range it makes up for with high damage and a powerful alt-fire mode that can blast targets back.

      [/*]
    [/*]
  • Weapon: Ray Gun

    • This lightweight Voltage weapon fires projectiles that take skill to land with precision, but reward accuracy with high damage.

      [/*]
    [/*]
  • Weapon: Mortar

    • This Explosive weapon lobs fast-moving projectiles with high gravity in an arc. Projectiles increase in impact damage as they travel and deal increased area-of-effect damage on impact, so go for the long shot!

      [/*]
    [/*]
  • Weapon: Fissile Collider

    • This Radiation-fueled auto shotgun shreds targets at close range, and has an alt-fire projectile that can pull targets in to the weapon\'s range of engagement.

      [/*]
    [/*]
  • [/list]
    • Game Mode: Capture the Flag

      [/*]
    • Modifier: Juggernaut (+ a few more!)

      [list]
    • The Juggernaut Gear will appear at a random location shortly after the match begins. Collect the pickup to don the powerful Juggernaut Suit, complete with it\'s own theme tune! Defeat the Juggernaut to claim the gear for yourself, inheriting whatever time they had left.

      [/*]
    [/*][/list]

    Performance

    Thank you to the players who took the time to report the performance issues with the Demo! We took these reports seriously as soon as we received them and got right to work patching some big issues with frame rate averages and spikes. In this update we are making multiple changes to optimize player and weapon models, the user interface and HUD, and NPC bots.

    We have also added a graphic to the Host Server screen that illustrates the performance impact of adding bots to your game. We recommend 5 bots on a mid-range PC. Setting the Bot Fill target to 6 (the default) will make sure you either meet or come in under this number. We aren\'t going to restrict the number of bots you can add, but we thought it was wise to let you know that running that many virtual brains is not free.

    Version b28_2.0 also includes fixes made to the Demo in the first three days. Thanks to our community for reporting these issues on the Discord!

    • Demo Missions progression blockers

      [/*]
    • Issues with the Contest Mode finale sequence

      [/*]
    • Problems with sounds not playing or finishing too late

      [/*]
    • Concerns with UI flow and user experience

      [/*]

    Thank you for playing the C4 Demo!

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

    Thank you.

    [ 2025-10-16 21:30:07 CET ] [Original Post]

    Minimum Setup

    • OS: Ubuntu 20.04
    • Processor: AMD Ryzen 5 5600 or equivalent
    • Graphics: Radeon RX6400 or equivalentNetwork: Broadband Internet connection
    • Storage: 3 GB available space
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