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Underwater Cities

#247763BGG ↗

2018 · 1-4 players · 150min · weight 3.59 · 22,916 ratings

v2 v3 fit 0.507

BGG raw

ID
247763
Name
Underwater Cities
Year
2018
Rank
250
Min players
1
Max players
4
Playing time
150
Min playtime
80
Max playtime
150
Avg weight
3.586
Num weights
814
Bayes avg
7.77409
Average
8.04176
Users rated
22916
Num owned
29957
Wanting
1064
Wishing
8674
Num comments
3206
Fetched at
Sat Apr 25 2026 16:15:40 GMT+0000 (Coordinated Universal Time)
Mechanisms (8)
End Game BonusesHand ManagementIncomeNetwork and Route BuildingSolo / Solitaire GameTurn Order: Claim ActionTurn Order: Stat-BasedWorker Placement
Categories (5)
Card GameCity BuildingIndustry / ManufacturingNauticalScience Fiction
Description (1321 chars)

In Underwater Cities, which takes about 30-45 minutes per player, players represent the most powerful brains in the world, brains nominated due to the overpopulation of Earth to establish the best and most livable underwater areas possible. The main principle of the game is card placement. Three colored cards are placed along the edge of the main board into 3 x 5 slots, which are also colored. Ideally players can place cards into slots of the same color. Then they can take both actions and advantages: the action depicted in the slot on the main board and also the advantage of the card. Actions and advantages can allow players to intake raw materials; to build and upgrade city domes, tunnels and production buildings such as farms, desalination devices and laboratories in their personal underwater area; to move their marker on the initiative track (which is important for player order in the next turn); to activate the player's "A-cards"; and to collect cards, both special ones and basic ones that allow for better decision possibilities during gameplay. All of the nearly 220 cards — whether special or basic — are divided into five types according to the way and time of use. Underwater areas are planned to be double-sided, giving players many opportunities to achieve VPs and finally win.

LLM v2 (wide)

Core verb
play card to colored slot
Decision shape
combinatorial
Reward schedule
engine_compounding
Aesthetics
["Challenge", "Discovery"]
Core loop pitch
Play a card into a matching-colored action slot; combo the action plus card effect to build your sea network.
Translation difficulty
Medium
Difficulty reason
Color-matching card-to-slot mechanic translates cleanly; an official Steam port by Rather Dashing/publisher exists, though heavy iconography taxes small screens.
Direct digital port
Underwater Cities (Steam)
Port kind
first_party
Closest loop translation
none yet
Primitive tags
["color_match_slot_bonus", "card_action_double_use", "era_phase_scoring", "network_route_chaining", "limited_action_slots_blocking"]
Confidence
0.7
Extracted at
Mon Apr 27 2026 11:40:03 GMT+0000 (Coordinated Universal Time)
Raw v2 JSON (953 chars)
{
  "game_id": 247763,
  "name": "Underwater Cities",
  "core_verb": "play card to colored slot",
  "decision_shape": "combinatorial",
  "reward_schedule": "engine_compounding",
  "aesthetics": [
    "Challenge",
    "Discovery"
  ],
  "core_loop_pitch": "Play a card into a matching-colored action slot; combo the action plus card effect to build your sea network.",
  "mobile_translation_difficulty": "Medium",
  "translation_difficulty_reason": "Color-matching card-to-slot mechanic translates cleanly; an official Steam port by Rather Dashing/publisher exists, though heavy iconography taxes small screens.",
  "direct_digital_port": "Underwater Cities (Steam)",
  "direct_digital_port_kind": "first_party",
  "closest_loop_translation": "none yet",
  "primitive_tags": [
    "color_match_slot_bonus",
    "card_action_double_use",
    "era_phase_scoring",
    "network_route_chaining",
    "limited_action_slots_blocking"
  ],
  "confidence": 0.7
}

LLM v3 (deep)

Not yet enriched at v3 (deep pass).