Everyone wants to save species. Can you actually do it?

Tap to begin
0top win
The custodian
CrayRescue

You take charge of a real threatened crayfish. Everything about it is drawn live from the World of Crayfish®.

Target your help

Aim each action at one population. The right action on the wrong one is wasted.

Finite resources

A handful of conservation stars, and time that never stops. You cannot save everything at once.

Real pressures

Habitat loss, pollution, drought and small-population collapse, plus any invasive that genuinely overlaps this range.

Bring it back and it returns to the wild, and you bank a reward worth its rarity. Fail, and there is no reward. Only a memorial.

Every scenario is data-driven: the richer and truer the World of Crayfish® records, the truer the rescue. Add your data to enhance what the next player inherits.

You are playing as a guest. Play the full case, but log in to bank what you earn.

A threatened species will be assigned to you.

No real money. CrayCoins are a free virtual arcade currency · educational play only
Conservation is a series of hard choices