Pick region mats. Each player picks (or is dealt) one of: Nation-State, Multinational State, Stateless Nation. Each has different starting CST/POP/DTM stage and a passive ability.
Build decks. Each player’s deck = 2 copies of each non-Event card (filtered: Stateless Nation cannot hold Developments pre-Statehood). Stateless gets 3× Irredentism copies (their win path).
Event deck. Shared. 2 copies of each Event card. Top card flips at the start of each round.
Draw 5 cards. Initial hand.
Place mats in a ring. Adjacency is the players to your left and right.
The Win Condition
First player to reach DTM Stage 5 and sustain it for one full round wins.
This is grounded in a real AP HUG debate: some demographers argue Japan, South Korea, Italy, and Germany have entered Stage 5. Others argue no nation has truly stabilized at sub-replacement fertility with sustained social cohesion. The game makes you live that question.
The DTM Ladder
Stage 1 — High birth rate, high death rate
Pre-industrial. No nations operate here today.
Stage 2 — High birth, falling death
Sub-Saharan Africa (parts), Afghanistan. Sanitation and agricultural surplus arrive; death rates fall.
Stage 3 — Falling birth, low death
India, Mexico, Brazil. Industrialization mature, urbanization majority, women in workforce.
Stage 4 — Low birth, low death
USA, UK, France. Replacement fertility (~2.1). Post-industrial economy emerges.
Stage 5 — Sub-replacement, aging — THE WIN
Debated: Japan, S. Korea, Italy, Germany. Population shrinks. Social cohesion must hold despite shrinking labor force. You must voluntarily discard 2 POP at this gate — the paradox of late-stage demographics.
DTM Gates (requirements to advance)
Stage 1 → 2 (Sanitation Revolution): Hold any Development card OR play Green Revolution. Real-world: Britain ~1750–1820.
Stage 2 → 3 (Industrial Maturity): Hold Industrial Park AND urban POP ≥ rural POP. Real-world: Britain ~1820–1880.
Stage 3 → 4 (Replacement Fertility): Hold Edge City or SEZ, POP ≥ 6, CST ≥ 5. Real-world: USA ~1970s.
Stage 4 → 5 (Sub-Replacement Stability): Hold Edge City, discard 2 POP voluntarily, CST ≥ 8, cohesion dominance (centripetal forces minus centrifugal forces ≥ 2). Survive 1 round at Stage 5 to win.
Turn Structure
Event flip. Top card of Event deck resolves for everyone.
Each player, in turn:
Upkeep — DTM stage affects pop drift (Stage 4+ slow pop loss models sub-replacement fertility).
Draw to hand size 5.
Play up to 2 cards: 1 self-affecting (build), 1 opponent-affecting (project). Lens cards are free instants.
Age out: persistent centrifugal forces >5 turns old fade.
Cohesion check: if CST drops below 0 and centrifugal > centripetal, regress 1 DTM stage.
DTM gate check: if requirements met, advance to next stage.
Era track: When total Developments in play ≥ 3, era advances to Industrial; ≥ 7, Post-Industrial. Some cards are era-gated.
Region Mats — Three paths to Stage 5
Mat
Start
Cap
Path
Nation-State
CST 6, POP 4, DTM 2
POP 6
Race up via shared culture & infrastructure. Examples: Japan, Iceland.
Multinational State
CST 4, POP 5, DTM 1
POP 7
Stockpile then climb. Fragile cohesion. Examples: USA, India.
Stateless Nation
CST 5, POP 3, DTM 1
POP 5
Play 3 Irredentism cards to declare Statehood — jump to DTM 4 instantly. Then race Stage 5. Examples: pre-2008 Kosovo, pre-2011 South Sudan.
The Pedagogical Hook
POP is your resource for 4 stages. At Stage 5, POP becomes the thing you must shed to win.
That reversal is the AP HUG curriculum: developed nations face sub-replacement fertility as their population stops growing. The card game makes you feel this paradox — the game-mechanic is the lesson.
Quality Notes
Every card carries a historic example. Cross-set variants of the same mechanic exist (e.g., future expansions release Ethnic Enclave: Kurdistan and Ethnic Enclave: Catalonia — same mechanic, different geography).
Aligned to College Board AP HUG Course and Exam Description (2020+). Each card cites its AP HUG subtopic codes.
Balanced via Monte Carlo + MCTS optimization (DaedArch board-game optimization engine).