Mini Challenges!
New inventive challenges posted each week
250
Rabbit Run
Draw the most amazing rabbit run!
Check out some other challenges
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28
Flight of the bumblebee
Design flying machines inspired by birds and insects
377
Terrific tennis
Design your ideal tennis court
488
Floating island
Create your own floating island
321
Land and sea
Invent a vehicle that can travel over land and sea
100
Leftovers
Invent a machine that recycles your leftover dinner