No.1 is a simple arithmetic exercises of the mind. Make the result of expressions to "1", by changing the operators "+, -, ?~, ??". Those operators can be changed by clicking. For example: ?@2+7+9+4=1 should be changed to ?@2?~7-9-4=1 One game can be done in 1, 2 minutes so it can be a good small pastime. iPhone version is also available.
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