
2026 · Expansion for Base-game
Nucleum: Gibraltar
Players operate as competing industrialists racing to develop nuclear infrastructure and technologies around the Strait of Gibraltar. The board shifts to a new geographic setting where players build Urban Buildings and novel structures across Morocco and the Iberian Peninsula to produce energy and meet military and civilian contracts. Players place pieces and expand networks to connect sites to Gibraltar, fulfill Military Contracts for access to exclusive military technologies, and research technologies from both the Experiment board and the expansion’s additions. The game emphasizes route-building, contract fulfillment, and technology acquisition as players balance industrial growth with specialized demands.
- Players
- 1–4 best 3
- Playing time
- 90–120 min
- Age
- 14+
- Complexity
- 4.7 / 5
About the game
- Design
- Publisher
Expansion for
See them in LudoyaExpansions
See them in LudoyaWhere to buy it
Shop prices and second-hand copies, checked every day.
On Ludoya's tables
Full stats in Ludoya- 5
- Plays logged
- 14
- Players
- 3h 23m
- Average play
- 16
- In collections
- 4
- On wishlists
9.0/10
from 2 Ludoya reviews
Rules questions
Answered from the rulebook by Ludoya's rules assistant.
Do my Boats work like Railway tiles, and can I use another player’s Boat?
Your Boats extend your network like rail lines, but shipping lanes are not Railway tiles for Milestones, Contracts, or scoring Technologies. You can transport coal and uranium with your own Boats, not electricity, and you cannot use another player’s Boat; the long-distance lanes to England and Türkiye are not part of anyone’s network (p. 6).
Can I import coal from England or Türkiye whenever I want?
You need a shipping connection to import coal from either source. England’s coal always costs 2 Thaler per coal, with a limit of 2 coal from England per Energize action; Türkiye follows the base-map import rules (p. 8).
Can I play a Chaining tile as a railway, or chain more than one in a turn?
No: a Chaining tile can’t be placed as a railway, and you may play no more than one Chaining tile per turn. Fully resolve its action before placing and resolving the non-Chaining tile on top; you also can’t fulfill an additional Contract that turn by placing the Chaining tile (p. 6).
Can I put a Special Urban Building on any site, or use one built by another player?
A Special Urban Building can only go on a site that allows its building type, and a Special Urban site can hold only a Special Urban Building. Treat your own as a regular Urban Building when Energizing, but you can’t interact with another player’s Special Urban Building (p. 7).
How do Military Contracts work, and do their Technologies count toward the 8-Technology endgame condition?
To fulfill one, you must meet its requirement—including connecting Gibraltar and the specified items in the same network using your own shipping lanes and co-owned completed railways—and follow the regular procedure for a Purple Contract; you can’t take one with the Contract action. The Military Technology reward does not count toward the 8-Technology endgame condition, and the Military Contract offer is not refilled (p. 7).
Free, on web, Android and iOS
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Game facts (players, playing time, age, credits) from BoardGameGeek.

