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Crates come down on parachutes with an animal in each one.
Slide your finger to move the trolley under one and it drops in.
Tap the meadow to set the top crate down. Tap the sky to
send it back up to the plane if you don't want it.
On a laptop: ← → to move, ↓ to set down, ↑ to send back.
The trolley only ever lets go of the crate on top, so grabbing
everything you can buries the one you actually wanted.
Get three or more of the same animal in a line — across, up and
down, or corner to corner — and they are brave enough to go. A line of
four is worth four times a line of three, and a line of five is worth
twenty times, so it is worth waiting. Corner to corner is worth double,
and crates tumbling into the gap can set off another rescue on their own.
A patch of meadow that is stacked to the top goes red and takes
no more. Miss three crates and that is the day.