Play the C4 Multiplayer Demo during Steam Next Fest!

During the October 2025 Steam Next Fest, Classical Caliber Combat Contest's free demo version will be regularly updated and expanded with new game content. These additions are building upon the second major demo version, after the initial public release all the way back in May '25. This new iteration of C4 boasts improved visual fidelity, refined gameplay, and entirely new features like the Announcer.

This new version of the Demo will also include a short series of quest missions players can complete to unlock permanent access to another weapon within the demo, which we believe is rather... super.

The demo will be updated over the course of the Next Fest with the following schedule:

1. October 13th: Event Begins

   • Weapon Series 1, 2 and 3

   • Three Maps: Playhouse, Surveillance, Excavation

   • Game Mode: Deathmatch

   • Modifiers: Egomania, Vampirism, All You Can Eat, Backpacks, Sticky Fingers

   • Character Bots: Authority, Instructor

2. October 16: Update #1

   • Weapon Series 4

   • Game Mode: Capture the Flag

   • Modifiers: Vitality, Shed Skin, Juggernaut

3. October 18th: Update #2

   1. Weapon Series 5

   2. Map: Corrosion

   3. Modifiers: Moon Men, Molten Tide, Infection

Additionally, keep an eye out for Secret Handshake team members in multiplayer matches while the Next Fest is on! They will have a unique badge next to their names in the player list, so you won't miss them. Developers just might be "hacking" in some full game content to show off, so keep your eyes peeled! We're excited to see you all out there.Secret Handshake Interactive is brought to you by players like you.

Thank you.