How many players do Endeavor: Deep Sea and Lost Ruins of Arnak need?

Both play at two. Both have a solo mode. Both seat up to four.

Head-to-head comparison

Endeavor: Deep Sea vs Lost Ruins of Arnak

Both are medium-weight euros for one to four that play solo. Arnak is the better-known box; Endeavor: Deep Sea is the Kennerspiel winner with more variety from its scenarios. Either suits a group moving past gateway games.

Medium weight Endeavor: Deep Sea

$59, checked Nov 3. Was $56.22 before Nov 3.

1-4 60-90 min Medium

Dive crews, sonar pushes, and a gorgeous ocean board: a Kennerspiel winner that packs real strategy into a friendly hour.

Buy Endeavor: Deep Sea · $59 →

Medium weight Lost Ruins of Arnak

$60, checked Nov 3.

1-4 60-90 min Medium

Deck building meets worker placement on a lost island. Approachable, rich, and gorgeous.

Buy Lost Ruins of Arnak · $60 →

Pick Endeavor: Deep Sea if

You want the friendlier medium euro: dive crews, a gorgeous ocean board, scenarios that change the setup, and a game that is done in ninety minutes.

Pick Lost Ruins of Arnak if

You want the deckbuilder with worker placement: send archaeologists to sites, buy cards, and climb the research track.

Side by side.

Fact	Endeavor: Deep Sea	Lost Ruins of Arnak
Players	1-4	1-4
Playing time	60-90 min	60-90 min
Weight	Medium	Medium
Price today	$59	$60

Both play at two.
Both have a solo mode.
Both seat up to four.
Cheaper today: Endeavor: Deep Sea by $1, prices checked Nov 3.

The tradeoff.

Endeavor: Deep Sea

Endeavor: Deep Sea runs six rounds, each split into two phases. In the preparation phase you recruit a specialist card from a communal tray, with your reputation track determining how good a pick you get, then collect action discs according to your inspiration track. The action phase is where the game lives: you spend those discs activating your specialists to travel a vessel to a new ocean zone and collect its arrival bonus, sonar open fresh zones of the sea map, dive for tokens you can bank or spend, conserve sites for rewards, or journal your findings to unlock bonuses and end-game scoring. Every action feeds one of four tracks on your player board, and each step up buys something concrete: better specialists, more discs each round, better disc retrieval, or faster vessels. Early turns are tight and small; by round five your research operation hums.

This won the Kennerspiel des Jahres in 2025, and the surprising thing is how breezy it feels for a connoisseur award winner. Turns move fast because you are executing a plan you built during preparation, not agonizing from scratch. The production sells the theme hard, all bioluminescent blues and clean iconography, and the box carries three complete ways to play: competitive, cooperative, and a solo mode structured as ten missions. That flexibility makes it an easy keep for people whose game nights change shape week to week.

Best for: Strategy Night, 3-4 Players, Solo

Lost Ruins of Arnak

Lost Ruins of Arnak combines worker placement and deck building into a game about exploring a lost island. Each round you place archaeologists on sites to gather resources, play cards from a small deck for travel and effects, buy items and artifacts from a market, and push a research token up a temple track that rewards the earliest climbers. Discovering a new site reveals a guardian, and you either overcome it for a bonus or let it haunt your deck with a fear card. Five rounds, then scoring, and a game that reliably lands in the 60 to 90 minute range.

What makes it work is that every system feeds the others without any single one dominating. Your deck stays small, so each card you buy matters; your two workers are precious, so the sites you claim matter; and the research track is a race that punishes anyone who ignores it. New players can follow a simple plan, explore and buy artifacts, and score respectably, while experienced players find the combinations that turn a good round into a great one. The art and components sell the theme without a word of flavor text.

Best for: Strategy Night, Solo, Two Players

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