Modern AGE and Expanse RPG Bundle
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Adventurer! We've resurrected (for a third time!) our December 2020 Modern AGE and Expanse RPG Bundlefeaturing The Expanse Roleplaying Game based on James S. A. Corey's mega-popular science fiction novels of diplomacy, danger, and discovery in the future Solar System. This bargain-priced revival also includes Modern AGE, which adapts the same rules for high-power action from the Industrial Revolution onward. Both these tabletop roleplaying games use the easy and fast-playing Adventure Game Engine (AGE) from Green Ronin Publishing. You have a new chance to get everything you need for your own campaign of modern adventure or high-flying hard sf.

Apparently this is an old Bundle from 2020.

If you’re only interested in The Expanse, I’m afraid it’s only available in the higher tier,

The lower tier includes: Modern AGE Basic Rulebook, Modern AGE Companion, Threefold, Enemies & Allies, Missions: Warflower, Modern AGE Game Master’s Kit

The higher tier includes: The Expanse RPG, Ships of the Expanse, The Expanse Game Master’s Kit, The Expanse: Abzu’s Bounty, The Expanse: Salvage Op