Meet Amazing Alex - a creative kid who likes to make barmy contraptions out of toys and other things he finds lying about the house. In this physics-puzzler, it's your job to slot in the missing pieces to make his chain reactions come to life.

First up, it's The Classroom. These first 16 levels of Amazing Alex will show you the basics. You'll learn about placing, moving, and rotating objects as you plop balls into baskets, knock over (cardboard) robots, and burst balloons.

If you get stuck, load up the level fresh and then recreate the setups shown in our screenshot walkthroughs. If you follow our advice to the letter, you'll beat the stage and unlock three stars on every level.

Level 1 - Playtime
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Level 2 - Catch That Ball
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Level 3 - Mind the Gap
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Level 4 - Rollercoaster
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Level 5 - Chain Reaction
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Level 6 - The Robot Overlord
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Level 7 - Behind Boxes
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Level 8 - Revenge of the Robot
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Level 9 - Books Away
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Level 10 - Ball Collector
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Level 11 - Push and Pop
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Level 12 - Flying with Scissors
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Level 13 - Pop, Don't Fly
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Level 14 - Ballooned Away
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Level 15 - Balloon Pusher
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Level 16 - Free That Balloon
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