How to Play
Your mandate: reach net-zero carbon by 2100 without losing the public's trust.
The gauges
Year / Month
The clock runs Jan 2025 → Dec 2100. At 1x, one in-game month passes per real minute.
Carbon Gain / Month
The key metric: how much CO₂ (ppm) your county adds each month. Drive it to ≤ 0.00 to win.
Current Carbon (ppm)
Starts at 430. If it hits 600, the game is lost.
Population Support
0–100%, starts at 65%. Below 50% bills can't pass; below 30% residents undermine progress.
Budget
Starts at $2M (Mayor), plus $1M each in-game year. Every project draws from it.
Controls
- Pause / Play — stop or resume the clock.
- Speed — 1x, 1.5x, or 2.5x.
- Skip Forward — jump ahead one full year.
- Auto-pause — time freezes automatically whenever you open an action panel, and resumes when you close it.
- The map — drag to pan, scroll or use the buttons to zoom. Click any region to act. One infrastructure per region.
Modes
🏛️ Mayor
Full powers: the Shop, Research Corporations, Bills, and Tree Planting. The complete strategy loop.
🎓 Older Student
Smaller budget, local actions only. Progress mainly through advocacy — write your own letter from real data and submit proof for a big boost.
📚 Younger Student
Simplified play. Build a letter by dragging pre-written sentence blocks into order, then send it for real.
Win & lose
Win by getting Carbon Gain/Month to ≤ 0.00 any time before December 2100 (with at least minimal governing support).
Lose if you reach January 2101 without net-zero, or if Current Carbon hits 600 ppm.