Canular Clavier (gamejam version)

My keyboard isn't working correctly.
Help me get rid of most buttons, just keep two of them.

Use the mouse to play and keyboard to start.

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I made this game in less than 4 hours for the Gdevelop Week-End Game Jam 3.
Here is the Post Jam Version if you want to try the fixed and complete version.

Be careful of bugs :

1. Don't put button outside the screen or the white border (If you do, reload the page)
2. When you win, you go back to title screen 

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CREDITS :

Keyboard letters by Kenney - kenney.nl
Curse Font by somepx
Bum.wav by Sancho82 -- License: Creative Commons 0
Animal Dog Bark 26.wav by abhisheky948 -- License: Creative Commons 0
Clap Sample by Birdland66 -- License: Creative Commons 0
Yodel by Astounded -- License: Creative Commons 0