Flappy Bird

Flappy Bird is a concenpt esolang made by User:Yes
Commands are "pipes"

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 |   |
 |___|

  ___
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Commands are based on height of pipes like, for example:

 |   |       |   |       |   |
 |___|       |   |       |   |
             |___|       |___|
  ___                     ___
 |   |        ___        |   |
 |   |       |   |       |   |
 |   |       |   |       |   |