Logjam: River Logic

The raft is stuck in a logjam. Slide the logs along their length, out of its way, and get the raft out through the gap in the bank – in as few moves as you can. 280 rivers, each with a known shortest way out (its par), and a new one every day.

Support

Found a bug, stuck on a purchase, or have an idea? Email [email protected] – please include your phone model and, for a puzzle question, the difficulty and level number.

Frequently asked questions

How do I play?

Drag a log along its length: logs lying along the river slide left and right, logs lying across it slide up and down. A log slides as far as the water is free. Get the raft to the gap in the right bank.

What is par, and how do I get three stars?

Par is the fewest moves the raft can get out in. A slide is one move however far it goes, and sliding the same log again straight away still counts as the same move. Finish in par for three stars, within a few moves of it for two. Undo takes moves back; Start over resets the river.

I bought a pack but the levels are still locked.

Open any locked level to get to the Purchases page and tap Restore Purchases. Make sure you are signed in to the store with the same Google or Apple account you used to buy it.

I got a new phone. Is my progress saved?

Purchases are tied to your store account and can be restored on any device. Your progress and best times are stored only on the phone you played on and are not synced.

What do the free and paid levels include?

All 40 Easy levels (including a five-level tutorial), a free daily puzzle and the first 10 levels of Medium, Hard and Expert are free. The rest come in one-time packs of 35 levels, or all at once. There are no ads, no subscriptions and no account.

What data does the app collect?

Only anonymous gameplay statistics and crash reports, and you can switch them off in Options – see the privacy policy.