Activates on Steam. Region: Global.
Activates on Steam. Region: Global.
SYSCALL: RING ZERO
Chilling Moose Games · 2026
Activates on Steam. Region: Global.
In stock at its regular priceIn stock
Delivered to your account, usually within minutes after payment is confirmed.
Card payment on a hosted page with 3-D Secure.
- Replacement or refund if a key doesn't work.
Before you buy
- Platform
- Activates on Steam. You need a Steam account and the Steam app.
- Region
- Global: no regional lockREGION FREE
- Languages
- English
- Delivery
- To your account, usually within minutes after payment is confirmed
Important: This game expects you to at least have a basic understanding of how the computer works. We encourage you to try the Demo to get an idea of how the game is. SYSCALL This is our world now. The world of the electron and the switch. SYSCALL is a reverse-engineering and assembly optimization puzzle game inside a private 1990s warez BBS. You will be writing assembly programs, reading listings, tracing the machine, changing the code, and shipping the crack. READ THE CODE THAT RUNS Every CRACK release is a small SYSCALL CORE program. You are able to trace programs, inspect assembly instructions, get hints and watch registers move, in order to find the way to TRACE, CRACK and PATCH programs. FOUR WAYS TO HACK THE NETWORK CRACK: Read the listing, find the secret input key, and bypass the protection. PATCH: Fit the smallest fix into fixed edit slots, then run the test battery. WORM: Program a dynamic up to nine-core rack, route values across ports, and cut lines and cycles. SCOPE: Write firmware until the live trace locks onto the ghost signal. SOLVED IS ONLY THE FIRST POST SYSCALL has 200+ authored puzzles across four modes, but the clear is not the end. The board keeps records. CRACK tracks clean and swift solves. PATCH scores moves. WORM scores lines and cycles against REMOTE posts. SCOPE rewards tight firmware and low power. A working answer gets you in. A clean answer gets your name on the board. A PRIVATE BOARD WITH REAL TOOLS Dial in, pick a node on the NETWORK MAP, read the mail, check the notes, and work the releases. The board has PHILES that teach the SYSCALL CORE, crew messages, NFOs, greets, records, and side tools. CANVAS is a freeform assembly pixel toy. TRACKER is a four-channel chip-tune maker you can set as the board music. BUILT FOR CONTROLLER, KEYBOARD, AND MOUSE Every screen is playable with a gamepad, including text entry. You can write assembly on your favorite handheld gaming device or your TV! SYSCALL includes a tuned on-screen keyboard, controller command bars, readable scaling, reduced-motion options, and offline play with no accounts or backend.
Redeem on Steam
You need a Steam account and the Steam app.
- Step 1: Open Steam and sign in.
- Step 2: Open the Games menu, then choose Activate a Product on Steam…
- Step 3: Enter the key and follow the prompts.
- Step 4: The game appears in your Library.
Windows
- Minimum
- Requires a 64-bit processor and operating system OS: Windows 11 or newer Processor: 64-bit x86-based CPU Memory: 4 GB RAM Graphics: DX11 Supported GPU Storage: 500 MB available space
Mac
- Minimum
- OS: macOS Sequoia 15.2 Processor: Apple Silicon (M1 or better) Memory: 4 GB RAM
- Platform
- Steam
- Region
- Global (listed as “REGION FREE”)
- Type
- Base game
- Languages
- English
- Developer
- Chilling Moose Games
- Publisher
- Chilling Moose Games
- Release date
- 3 July 2026
- Genres
- Strategy, Simulation, Indie, Casual
- Keyterminus catalogue no.
- KT-B2231E3601
More on platform 1 · Steam
More strategy on Steam, in board order.