DUSK - Intruder Edition (v1.8.21) is an exciting first-person shooter (FPS) game for the PC. First released in 2018, DUSK has garnered a lot of attention for its intense and realistic gameplay, with a plethora of challenging levels, excellent visuals, and a customizable user interface. The game's latest update, dubbed the Intruder Edition, brings with it a slew of new content and gameplay mechanics.

The Intruder Edition of DUSK offers players a variety of new content, including updated textures and model details, plus two new enemy types with new behaviors. Players will also find an updated arsenal of weapons and gear, as well as brand new levels. The improved visuals are truly impressive, with high-definition (HD) visuals and lightning, plus enhanced detailing and effects.

A big draw of DUSK is the level of customization that players can undertake, from customizing weapons and gear to creating their own levels using the in-game Level Editor. The game also supports modding and a variety of user-created content, including skins, levels and more. Additionally, DUSK supports four-player multiplayer and comes with a full suite of audio and video settings for gamers to tweak.

Perhaps the best part about DUSK - Intruder Edition (v1.8.21) is that it is completely free. The game is available on Steam and other gaming platforms, and comes with all the content mentioned above. With so much content to explore, and excellent visuals and gameplay, there's no doubt that DUSK is a great FPS experience.