About Overshoot

Overshoot is a strategy game about running a fossil-dependent economy and trying to grow it without overheating the planet. You build power, hold a coalition together, and race your own lock-in.

It exists to make one idea you can feel: cheap now is expensive later. The plant you build cheaply today is the one you can't afford to shut down tomorrow.

Built by Ted Shabecoff.

Playable prototype · Single file · Runs in any browser

OVERSHOOT

Year 2025

GDP

—

Global temp

—

Political capital

—

Capital / decade

—

Outlook — if nothing changes

history locked-in risk if policy stops +2.0° limit

Planetary tipping points

The shaded zone is the published risk range. The real threshold hides inside it — you learn where it was by crossing it. Crossing is permanent.

Energy & emissions

Fossil capacity—

Clean capacity—

Energy demand—

Net emissions / decade—

Forests—

Clean tech level—

Oldest fossil plant—

The coalition

Political capital is the sum of these moods — one number, four reasons.

Policy decisions

Build plants and forests on the map. These are the policy levers.

The record

OVERSHOOT

INHERITED COAL ECONOMY — JANUARY 2025

You've just taken office. Five fossil plants power the economy. They're cheap, they're popular, and they belong to the people who built their lives around them.

You have three tools for the transition:

🏭 FOSSIL

Cheap (11). Grows the economy. Jobs boost support. But every decade it runs, retirement gets harder and costlier.

⚡ CLEAN

Better long-term, but starts at 28. Fund R&D to cut the price. Dispatches first — cuts emissions before you retire anything.

🌲 FOREST

Cheap mitigation (8). Absorbs 4 emissions per decade. But forests take land you can't use for anything else.

Mandate: triple GDP, stay under +2.0° warming, keep political support. You have 15 decades. The planet has tipping points — you'll find out where they are by crossing them.

Cheap now is expensive later.

OVERSHOOT

About Overshoot

OVERSHOOT

Outlook — if nothing changes

Planetary tipping points

Energy & emissions

The coalition

Policy decisions

The record

OVERSHOOT

SCIENCE CODEX