Welcome to the slaughter.
- Extract or install the complete package.
- Open Steam and sign in. Every desktop player needs this matching playtest build and their own Steam account.
- Launch Cinema Slaughter Playtest, create a game, and invite your friends.
Phones are your private controls.
Use Code, QR & share in the game lobby. Friends can scan the QR or visit play.bubbleskull.net and enter the four-digit room code. Phones do not need a copy of the game.
A home game supports eight people. An online party supports four people, including phone guests. Manage that party in the desktop game before joining another match.
If someone disconnects
Reopen the same app or phone browser to recover the same seat. The original host has two minutes to return on the same computer and choose Resume Game. Explicitly ending the room ends the match.
This is a private playtest, with the full card library. Steam may call it Spacewar because it uses development App ID 480. Temporary phone hosting expires November 14, 2026 at 9:53 PM US Eastern. Share these builds only with your testers.
Testing notes
Start with a private game, then try public games, party travel, and reconnecting. Report the platform, screen/reel, and what each player saw. Never include passwords or private controller links.
These development packages are not distribution-signed. Windows requires Microsoft WebView2. Linux requires WebKitGTK 4.1. If the operating system blocks launch, report that warning rather than disabling its protections.