Frontline: Operation Kosmonaut

UPDATE 1.3 – FINAL UPDATE

Iron Curtain Interactive

UPDATE 1.3 – FINAL UPDATE

Update 1.3 is now available for FRONTLINE: OPERATION KOSMONAUT .

This is the final major update for the game and focuses on expanding Base Defence , improving local multiplayer support and polishing the overall experience.

LOCAL SPLIT-SCREEN BASE DEFENCE

Base Defence can now be played with 2 players in local split-screen .

Fight together against incoming enemy waves, defend your position and see how long you can survive.

Please note that the main Campaign remains a single-player experience . Split-screen is exclusive to Base Defence.

BUG FIXES & IMPROVEMENTS

Update 1.3 also includes a number of fixes and improvements across the game:

Added 2-player local split-screen to Base Defence Improved local multiplayer input handling Improved controller and keyboard/mouse device assignment Improved split-screen rendering and UI behaviour Fixed several gameplay and UI issues Various small stability and quality-of-life improvements General polish across Base Defence

THANK YOU

With Update 1.3, active development on FRONTLINE: OPERATION KOSMONAUT is coming to an end.

What started as a small Cold War FPS has grown through several updates with new systems, improvements and Base Defence — and this final update completes the version of the game we wanted to leave behind.

Thank you to everyone who played the campaign, defended the base, reported bugs or simply gave FRONTLINE a chance.

See you on the frontline.

– Iron Curtain Interactive

This announcement was originally published by Iron Curtain Interactive on Steam on Sep 24, 2026.

Open the original on Steam

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