An offline Steam emulator (frequently associated with groups like CODEX or standalone projects like SmartSteamEmu ) intercepts these calls. Instead of contacting an active server, the modified .dll routes the game's requests to steam_emu.ini to read pre-configured data.
Valve 公司的 Steam 订户协议（SSA）明确禁止对 Steam 客户端及其游戏进行任何形式的修改、破解或模拟。虽然关于模拟器本身的合法性存在不同解读，但根据数字千年版权法案（DMCA）的规定，Valve 有义务在收到侵权通知后，迅速移除或禁止访问平台上的侵权内容。历史上，Valve 曾多次对涉及破解和模拟的工具和论坛发出 DMCA 删除通知，并积极配合相关调查。 steamemuini
Some users buy a base game on Steam but wish to access DLC without paying. By replacing the legitimate steam_api64.dll with an emulator and editing steamemu.ini to include DLC entries, they attempt to unlock content. This violates Steam's Subscriber Agreement and can lead to account bans. An offline Steam emulator (frequently associated with groups