Steam announcementView the game on SifterAugust 26, 2026

Sentinel Shell Cinematic | Marathon

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SENTINEL SHELL // DEFENSIVE STRATEGIST

ZONE CONTROL TECH PREPPED, PRIMED, AND READY

Scavenge the lost colony of Tau Ceti IV in Marathon, the survival extraction FPS from the creators of Halo and Destiny.

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Runner shells are gameplay archetypes you can customize using the weapons, mods, cores, and implants you find on your runs.

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