is officially free-to-play and can be downloaded legally through the Steam store . Game Overview
Developed by KRAFTON, Inc., this top-down tactical shooter puts you in command of an elite special operations team. Formerly a paid title, it transitioned to a free-to-play model in May 2025. : Realistic Tactical Shooter
: While the game receives regular updates (current as of April 2026), the official free version on Steam is always the latest stable build.
: A free Modding Tool is also available, allowing players to create custom missions, weapons, and AI behaviors using a modified Unreal Engine 4 Editor. System Requirements (Recommended)
Install the game via your Steam client to begin playing immediately.
: Avoid third-party "free download" sites offering standalone .exe files for specific versions like v1.2.1, as these often contain malware or outdated, unsupported versions. Using the official Steam platform ensures you have the safest and most current version of the game. Thunder Tier One on Steam
