Get 3 stars on one level.

Get 3 stars on three consecutive levels.

Get 3 stars on ten consecutive levels.

Complete all Greece levels.

Complete all Greece levels with 3 stars.

Complete all Egypt levels.

Complete all Egypt levels with 3 stars.

Complete all China levels.

Complete all China levels with 3 stars.

Try to divide by 0... error!

Complete more than PI levels.

Complete 1+1+2+3 levels.

Complete a level in less steps that the stated number.

Challenge a friend.

Challenge 5 different friends.

Challenge a random player.

Beat 3 different friends in challenge.

Win 3 consecutive challenges.

Win a challenge by beating your opponent in all tests.

Reach a friend on the road.

Complete all Arabia levels

Complete all Arabia levels with 3 stars

Complete a lap around the world

Complete a lap around the world with 3 stars

Complete two laps around the world

Complete two laps around the world with 3 stars

Complete three laps around the world

Complete three laps around the world with 3 stars