For titles that require a Steam login even for local LAN play (like Counter-Strike: Source or Left 4 Dead 2 with mods), Stealth Mode allows multiple instances on one network without conflicting licenses.
Do not play on official VAC-secured servers (e.g., CS2, TF2, Rust) while GreenLuma is active. While Stealth Mode is safer, using any hook on VAC-protected games carries a high ban risk. Third-Party Launchers: greenluma stealth mode exclusive
Recent Steam client updates attempt to "phone home" regarding ticket validation via alternative UDP ports. Stealth Mode Exclusive includes a built-in packet filter that reroutes specific Valve telemetry endpoints (those checking for steam.inf modifications) to a localhost loopback. It does not block Steam connectivity; it selectively filters only the packets reporting client tampering. For titles that require a Steam login even