STEAM CATALOGUE

SYSCALL: RING ZERO

Reverse-engineer a private 1990s BBS. Read disassembly, patch broken checks, optimize a nine-core rack, and write assembly firmware that locks onto live scope traces. With 200+ puzzles, full controller support and offline play, you can refine your assembly skills on all your devices!

Store genres

Casual · Indie · Simulation · Strategy

Platforms

Windows · Linux · macOS

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