Use the arrow keys to move Ash. Click Professor Oak to talk to him. To catch Charmander or Eevee, walk into him. The screen will change, and now is your chance to catch your first Pokemon! Aim with the mouse and press space to fire a Pokeball.
Hopefully, I will make a larger version with multiple screens and more Pokemon to catch! as of now, you will only get a code for eevee to use in https://scratch.mit.edu/projects/479696483 enter eevee's code to battle with it! Thanks to @Kresinho