DogMarge

Cats are sitting in the way. Build the goal dog anyway. Five stages of physics puzzling.

■ Five stages
Start with a tutorial that asks for a Border Collie, then work up through the Siberian Husky and the Golden Retriever. Each stage adds more cats and leaves you less room to work with. Clear one and the next opens up.

■ Cats never merge
A cat is an obstacle that does not move. You cannot shove it aside, so the puzzle becomes how to stack around it. From stage 4 onward some cats sit in mid-air, which narrows the lanes you can drop into.

■ Eleven dogs to discover
Chihuahua, Pomeranian, Dachshund, Pug, Corgi, Shiba Inu, Border Collie, Siberian Husky, Golden Retriever and Saint Bernard. And waiting at the very top is a giant dog house.

■ One finger, plenty of depth
Aim and let go. Every dog falls with real physics, so no two piles are ever the same. Each breed has its own shape and weight, and some, like the Corgi, carry their balance off to one side.

■ Endless mode and weekly rankings
The fifth stage is endless with no cats at all. Your score is submitted automatically when a run ends, so you can measure yourself against the top 10 of the week and the month. Set a nickname so people know who you are. Weekly boards reset every Sunday and monthly boards on the 1st (Japan time). Only endless scores reach the rankings.

■ Five looks for your pack
Points earned from achievements unlock the Spring, Summer, Autumn and Winter skins. Each one redraws all eleven dogs and changes the background. If you would rather not wait, you can also buy a skin outright.

■ Achievements worth chasing
Meet each breed for the first time, clear the final merge, and pass score milestones for bronze, silver, gold and platinum rewards.

■ Plays anywhere
The game itself needs no connection. Only the rankings, skin purchases and the optional once-a-day ad go online.

■ About purchases
Every seasonal skin can be unlocked with points you earn by playing, so nothing is locked behind a payment. The game is a single purchase and buying a skin is only a shortcut. You can also watch one rewarded ad per day for extra points.