BoardGameArchiveEndeavor: Deep Sea
Endeavor Deep Sea guide: six-round specialist engine, four attributes, scenario scoring, solo and co-op modes, standard-box player count and expansions.
Endeavor Deep Sea guide: six-round specialist engine, four attributes, scenario scoring, solo and co-op modes, standard-box player count and expansions.
Overview
Lead an independent research institute exploring an expanding ocean map while developing expertise and completing conservation objectives.
Why We Love It
Exploration changes the action network during play, so efficiency depends on adapting your institute to newly revealed opportunities rather than following a fixed route.
About Endeavor: Deep Sea
Head an ocean research institute across six rounds in competitive or group cooperative play, or seven rounds solo. Recruit a new specialist each round, send vessels into an expanding map, research dive sites, publish journals and build positive Impact under a scenario’s scoring goals. The map and objectives change between plays.
The standard base box has four player mats and supports one to four players, including competitive, cooperative and solo modes. A separate fifth-player extension adds the pieces needed to play with five. Check the edition before buying for a five-person group.
How a round works
First choose a scenario sheet: it sets starting ocean tiles, special rules, goals and the Impact board. In each round, each player recruits a specialist. Competitive and group cooperative games last six rounds; solo play lasts seven. Reputation governs which tiers are available; a new specialist may also give an immediate attribute or Impact benefit.
Specialists provide actions for travel, discovery, dives, conservation and publishing. Activate one by placing a disc on it. That disc remains until you can retrieve it during a later Motivate phase; Coordination determines how many occupied specialists you can ready again. This creates a timing puzzle: recruiting an impressive specialist does little if you cannot free it for repeated actions.
Your other attributes support the engine. Inspiration supplies more discs, Ingenuity improves vessel reach and capability, and Reputation broadens recruitment. Impact advances a scenario-specific board and can unlock bonuses. The published rulebook describes each scenario as playable competitively, cooperatively or solo; use its co-op/solo rules and goals for those modes.
Key decisions and practical tips
Editorial analysis: Recruit for the action you will actually activate and for the immediate boost you need. A specialist that raises Coordination may free an existing worker next round; a high-tier action stranded under a disc is less useful than a modest action you can repeat.
Exploration example: uncovering a deeper zone expands options for everyone. If your Ingenuity or available vessel cannot reach it soon, an opponent may capitalize first. Pair map expansion with the capability and discs to exploit the new location.
Look at the scenario goals before deciding how far to specialize. Journals, research and conservation all generate different opportunities, but a scenario can make one type of Impact more rewarding. Do not measure a turn only by immediate points: a track increase that supplies extra discs or recruits better specialists can multiply across remaining rounds.
Who it suits and edition questions
Choose it for a scenario-based strategy game with a strong exploration theme and the choice of competitive, cooperative or solo play. It rewards planning an action engine while adapting to ocean tiles that appear during the game. It is a standalone follow-up to Endeavor: Age of Sail; that earlier box is not required.
Can the standard box play five?
No. The publisher lists four player mats and four team leaders in the standard box. Its separate fifth-player extension supplies a fifth set. Some deluxe configurations include extra components, so verify the exact listing.
What does Uncharted Waters add?
Uncharted Waters is a separate expansion with new missions, depths and specialists. Learn the base scenario system first; the expansion is not required for solo or cooperative play.
Related games
Learn Endeavor: Deep Sea in depth
Publisher sources and edition notes
- Burnt Island Games: game and rulebook
- Burnt Island Games: standard box contents
- Burnt Island Games: fifth-player extension
- Burnt Island Games: Uncharted Waters
Facts and player-count correction checked October 2, 2026. Strategy examples are editorial analysis.