Front box cover of Endeavor: Deep Sea board game, featuring a yellow submarine hatch design with diving gauges and teal corner accents.

Endeavor: Deep Sea

$59.00
Sale price  $59.00
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Endeavor: Deep Sea

$59.00
Sale price  $59.00
Our Take

Endeavor: Deep Sea is the modern-day followup to Endeavor: Age of Sail, redesigned around ocean science. You run a small marine research institute, dispatching specialists to dive sites, publishing papers, and launching conservation projects. It's also one of the only meaty Euros in the box that ships with full competitive, cooperative, and solo modes.

Game At A Glance

Players 1-4 PlayersBest: 3
Playtime 30-120 Min
Recommended Ages 10+
Complexity Medium Light · 2.9 / 5
Play Style Cooperative, Competitive, Solo-Friendly, Thoughtful
Game Type Engine Builder, Set Collection
Theme Ocean, Marine Biology, Exploration
Publisher Burnt Island Games
Designer Carl de Visser, Jarratt Gray
Year Published 2024
Awards
2025 Deutscher Spiele Preis Best Family/Adult Game 2nd Place, 2024 Origins Awards Best Heavy Strategy Game Winner, 2024 Origins Awards Best Heavy Strategy Game Nominee, 2024 Golden Geek Medium Game of the Year Nominee, 2024 Golden Geek Best Thematic Board Game Nominee, 2024 Board Game Quest Awards Best Strategy/Euro Game Nominee

Crew up. Cast off. Chart the ocean

Imagine a small research vessel pulling away from harbor at first light, bound for waters no one has fully charted yet. Your crew is tight, your funding tighter, and somewhere out there is the next paper that puts your institute on the map.

Endeavor: Deep Sea is a standalone followup to the original Endeavor, rebuilt from the ground up around ocean ecology. Each round you assign your researchers to action spaces that map dive sites, recruit specialists, publish papers, and launch sustainability projects. The action-retrieval system means every move you make this round also shapes what you can do next round, so sequencing matters as much as scoring.

What sets it apart is the flexibility in the box. The same components support a competitive race for prestige, a cooperative mode where you're keeping the ocean healthy together, and a real solo mode for late-night sessions. Few games this meaty offer all three without compromise.

Strategy gamers will love the layered decisions and tight resource pressure. Couples and small groups looking for a thoughtful evening will find a great fit at the recommended three-player count. Plan on around two hours, longer your first time through.

The components are gorgeous, the marine biology runs deeper than most ecology-themed games, and the cooperative mode is a genuinely different experience once you've worked the competitive side.

Frequently Asked Questions

How many players can play Endeavor: Deep Sea?
Plays 1 to 4 players. Three is widely considered the sweet spot — enough institutes competing for dive sites to make every action feel tense, without slowing the round to a crawl.
How long does a game of Endeavor: Deep Sea take?
Plan on 90 to 120 minutes once everyone knows the icons. First plays often run longer because there are several action types to learn, but the rules click quickly after the first round or two.
How does this compare to the original Endeavor: Age of Sail?
Same core action-retrieval engine, but rebuilt around ocean ecology rather than colonial trade. The setting, projects, and tone are completely reworked, and Deep Sea adds full cooperative and solo modes the original never had.
Is the cooperative mode worth playing?
It's not a token afterthought. The rules shift to put everyone on the same side working against environmental damage, and the action-retrieval mechanic makes coordination feel tactical. It plays as a genuinely different game from the competitive mode.
Is this a good fit if we're newer to modern board games?
Endeavor: Deep Sea sits at medium-heavy weight. Newer players will follow along fine with a teacher at the table, but it's not the right first modern board game. If your group has a few Euros under their belt, you'll be fine.
What does the table look like during a game?
Lots of beautiful illustrated cards, a personal institute board, and a shared central board with dive sites and conservation tracks. It's a busy table for a reason — there are a lot of paths to victory points and you'll want them all visible.

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