Terraforming Mars · Board game rules
When can I place cities and raise temperature?
Quick answer
You can place cities using the standard "Cité" project (cost: 25 M€) or via specific cards. Temperature can be raised via the "Astéroïde" project (14 M€), converting 8 heat resources, or relevant cards, provided the temperature hasn’t reached +8°C.
Details
Placing Cities
- Cities (tuiles cités) are placed using the standard "Cité" project (page 10), which costs 25 M€. This action allows you to place one city tile on the board, provided the target hex is not adjacent to another city (except for Noctis City, which has a reserved spot) [p.10 — B) Utiliser un projet standard].
- Some cards may also grant the ability to place cities as part of their effect or bonus. Always follow the placement rules: no adjacency to other cities (unless specified) and adherence to reserved zones [p.5 — Tuiles cités].
Raising Temperature
- Standard Project: Use the "Astéroïde" project (14 M€) to increase temperature by 1° (and NT by 1) [p.10 — B) Utiliser un projet standard].
- Heat Conversion: During the action phase, convert 8 heat resources into a +1° temperature increase (and NT by 1) [p.8 — 3) Phase d'action].
- Card Effects: Certain cards (e.g., projects or corporations) may directly raise temperature as part of their effect.
Conditions and Limits
- Temperature cannot exceed +8°C. If it has reached this maximum, further increases are ignored for NT purposes, but cards can still be played [p.4 — PARAMÈTRES GLOBAUX].
- Actions (projects, conversions, or card effects) are resolved during the action phase of a generation [p.8 — 3) Phase d'action].
Watch out:
If a player attempts to raise temperature beyond +8°C, the NT does not increase, but the action is still valid (e.g., paying for "Astéroïde" or using a card). Similarly, cities cannot be placed adjacent to other cities unless explicitly allowed (e.g., Noctis City).