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C4: Classical Caliber Combat Contest
Secret Handshake Interactive Developer
Secret Handshake Interactive Publisher
July 2025 Release
Game News Posts: 6
🎹🖱️Keyboard + Mouse
🕹️ Partial Controller Support
🎮 Full Controller Support
No user reviews (0 reviews)
Internal version b12_1.0 released

Version beta 12 is now available for internal testers! It will appear as "d1_1.3.0" as we are preparing a patch to Demo One for release later in June. If you are just keeping up with development from the outside. thank you for your support. Make sure to join the Discord to be a part of the conversation.

Content

  • New weapon: Nucleus Projector

    • Fires a rapid stream of medium-speed Radiation projectiles

  • Bots can now participate in Contest mode!

    • They play cards attempting to match Power Hands just like you.

Balance

  • Buffed the Scrap Blaster

    • Added a small area of effect to the projectile when it detonates

    • Increased shotgun pellet damage 12>15

    • Increased projectile lifetime 0.1>0.125

    • I can fix him I swear

  • Tweaked the Raygun

    • Reduced projectile size as it was large enough to interfere with the environment

    • Increased projectile speed 8500>10000

  • Tweaked the Boost Jets

    • Instead of enabling additional jumps, the space bar now triggers a normal boost

    • Ultimate Upgrade can now jump to boost, just like the base item

Features

  • Changed the behavior of a number of Contest features

    • The Shop now always holds 5 packs. If you open a pack, it will be replaced with a new random pack

    • Card packs now appear in invisible "slots". This helps prevent ridiculous Shop offerings like 5 Modifier packs

    • Direct-purchase cards are now only single purchase, but available at higher levels with later rounds

    • Tooltips for card packs now show a carousel animation of the cards inside

    • The cards in your hand are now sorted by ammo type

    • Power Hands have been simplified. They now do not use "double selectors", only single card categories for each slot

    • Modifier cards now properly combine and level up on the board

  • A new option is available to server hosts: Bot Fill

    • The game will automatically add bots to raise the player count to the set target. If more players join, bots will be removed.

    • If the number of players "overflows" the target set for Bot Fill, the game will create additional bot players to match the next "milestone", ensuring map sizes always accommodate the proper number of players.

  • Added the ability to start a lobby in a new "pre contest" state from the main menu

  • The Shell mutator barrel explosion now applies an "anti heal" effect

  • Using the Lightning item now triggers a universal sound effect for everyone

  • The team placement indicator will now also show a "Tie!"

  • Scoreboard now highlights which column it is sorting by

  • Added the Mortar and Nucleus Projector to the main menu


[ 2025-06-14 15:31:16 CET ] [ Original post ]

Internal version b11_1.0 released

Version beta 11 is now available for internal testers! It will appear as "d1_1.2.0" as we are preparing a patch to Demo One for release later in June. If you are just keeping up with development from the outside. thank you for your support. Make sure to join the Discord to be a part of the conversation.

Content

  • New weapon: Mortar (explosive)

    • Fires arcing projectiles that deal increasing impact damage as they fly

    • Hitting the environment triggers a large detonation

  • New weapon: Nailgun (explosive)

    • Charges and releases a burst of seven hitscan shots as you hold the trigger

Balance

  • Contest mode interest is now capped at +$10

Features

  • Added "Power Hands" to Contest Mode. Each round, a new Power Hand is added with randomized requirements. Meet the requirements of the hand to level up all of your played cards

  • The Contest shop now offers 3 cards for direct purchase. These cards can be unleveled, all the way to +9 (very rarely!) and are offered for purchase as many times as you can afford.

  • Added a placement based cash reward to Contest mode

  • Contest results screen now says your place

  • Contest mode can now be ended early with the /contest command or the match config menu

  • Scoring and the place indicator now understand what a tie is!

  • After entering a Station ID, a "server browser" appears listing the public games hosted using that ID. Previously, the game would only attempt to join the single best option

  • Mutator Barrel Voltage and Radiation forms now use cylinders for their effect areas that much more closely match the visual effects


[ 2025-06-07 16:40:17 CET ] [ Original post ]

Internal version b10_1.0 released

Demo One is now available! It was a few days late due to some holdups with the Steam validation process. It represents a limited look into the complete game. Version beta 10 is now available for internal testers! It will appear as "d1_1.1.0" as we are preparing a patch to Demo One for release later in June. If you are just keeping up with development from the outside. thank you for your support. Make sure to join the Discord to be a part of the conversation. Content - New map: Corrosion! Indoors and "outdoors" areas around a facility working with some pretty nasty chemicals. Features - Contest Mode has been simplified. Removed Gadgets, Stars, Style, and Tags. - The option to purchase "pack picks" in the Contest lobby has been removed. Additional packs beyond your free Picks now directly cost Cash. - Tooltips have been added to cards in the Contest lobby - You can now click-to-skip both the pack opening and contents revealing animations - New "radiation" stage hazards for Corrosion - New first-person effects for the radiation negative status - Gamepad support has been expanded with an on-screen keyboard and improved virtual cursor.


[ 2025-05-31 18:45:12 CET ] [ Original post ]

Version b9_1.0 released

Content - New item: Grapple Hook. Grabs terrain, other players, and pickups. Balance - Rebalanced pickup spawn times and quantities across all maps. In general, Health pickups are identical. Armor pickups are less plentiful but restore more. - Removed items from Item Boxes: Armor Shard, Goo Grenades, Ink Rocket, Ammo Box - Completely rebalanced item distribution across kill deltas - Simplified a number of items that previously added/removed Armor Stacks. Now exclusively granted by Item Boxes, and removed from killstreaks. Features - Improved bots. Fixed a number of major bugs, and improved their logic for selecting what kind of pickup to gather - Added name tags to lobby mannequins - Pregame flyaround cutscenes now loop instead of sticking on a black screen at the end - Added demo version branding to main menu - Implemented demo content blocks (these will be lifted for internal versions after Demo One is stable) - Added a match feed event for shutting down a kill streak - Improved the place indicator with a larger size, new visuals, and sound effects - Added a second place indicator for team-shared-score modes, showing the overall position of your team. - New models for a number of existing items like the Heavy Gear and Ultimate Upgrade.


[ 2025-05-17 18:45:17 CET ] [ Original post ]

Version b8_1.0 released

Content

  • New item: Goo Grenades
  • New item: Remote C4
  • New item: Pickup Portal
  • New item: Paint Grenade
  • New item: Burst Bubble
  • New item: Armor Vacuum
  • New item: EOD Heavy Suit
  • New item: Power Armor
  • New item: Weather Machine
  • (Two additional Items, the Grapple Hook and Bounty Note, are present in the test range. These will be implemented in a future update.)
Balance
  • Power Saw weapon:
    • Removed small knockback impulse from projectile impact
  • Rocket Pistol weapon:
    • RPM 120>100
    • Radius 100>125
    • Base projectile damage 50>35
  • Incinerator weapon:
    • New alternate function: Alt-fire launches a projectile with minimal damage and high knockback.
  • Mine Launcher weapon:
    • RPM 65>120
  • Machine Gun weapon:
    • Turret mode base damage 24>18
  • Spray Can item:
    • Range 1000>750 (this actually makes it more reliable at close range)
  • Bowling Bomb item:
    • Impact damage 25>20 (full damage combo goes from 100 to 95)
  • Steel Trap item:
    • "Set" damage 100>75, "throw" damage 50>35
  • Phase Watch item:
    • Invincibility duration 7>5s
  • Mutator Barrel stage hazard:
    • Increased the velocity Barrels are pushed by instances of basic damage
  • "Painted" generic effect now briefly covers your center field of view
    • This effect fades much quicker than the overall peripheral vision effects
  • "Electrified" generic effect damage vulnerability 50%>35%
  • "Gravity" generic effect (from Pickup Portal and Explosive mutator barrel effect) now adds a 20% damage vulnerability for it's short duration
  • "Hacked" generic effect:
    • Reduces max armor by 50%
    • Prevents item usage
Features
  • A popup has been added to the crosshair HUD indicating when the player is swap-locked or item-locked.
  • Icons have been added to damage popups indicating a precision hit and whether the damage is higher or lower than normal, taking all factors into consideration


[ 2025-05-10 17:12:04 CET ] [ Original post ]

The C4 Demo releases May 22nd!

Classical Caliber Combat Contest is the 'kart racer of arena shooters', developed and published by Secret Handshake Interactive. We are preparing to release a free demo version of the game, complete with singleplayer and multiplayer gameplay, containing a carefully crafted selection of the full game's content. On May 22nd, players will get access to the limited demo version of C4, which they can play offline against bots or online against platform friends. This version contains a curated set of the full game's weapons, maps, modes, modifiers, and NPC bots. Fan favorite elements such as the Rocket Launcher and Radiation Rifle will make an appearance, as well as rising stars such as the Shell Compactor. Battle on the classic Playhouse arena, or mix it up with the strategic, randomized Contest mode. To keep up to date with the development of C4, join our Discord! You can further support development by becoming a Patreon supporter. Secret Handshake Interactive is brought to you by players like you. Thank you.


[ 2025-05-02 16:50:41 CET ] [ Original post ]

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.


MINIMAL 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

GAMEBILLET

[ 6273 ]

4.18$ (16%)
12.42$ (17%)
42.45$ (15%)
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12.42$ (17%)
GAMERSGATE

[ 1500 ]

0.43$ (91%)
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0.68$ (91%)
1.13$ (96%)
MacGamestore

[ 2017 ]

8.99$ (82%)
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1.10$ (93%)
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43.99$ (27%)
21.49$ (14%)
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13.96$ (30%)
3.99$ (80%)

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