Captain Sonar: Upgrade One*
* 
Up to eight players take on the role of a submarine crew in a fierce battle against rival players. The expansion introduces five new scenarios, two new weapons, eight erasable markers, and various options for playing the roles of captain and radio operator.
- 👥 2 - 8 Players
- ⏱️ 12 - 45 Minutes
- 🧒 14+ years old
- 🧩 Easy to learn
* We like Captain Sonar: Upgrade One so much that we recommend it in the following board game recommendation lists 2026
- Position 56 in Best games released at SPIEL 2017 in Essen
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