It is important to press the green flag before you do anything. Press the "r" key to reset to the beginning. When the grey box is shown you can attack. Chose your move and see the result.
This is based on the Pokemon video game series. Most of the sprites are scratch default but I added the battle animations for them **Disclaimer: This was my first big project and there will be bugs and glitches. This was made a long time ago and I only shared it because I'm currently working on a sequel that is more in depth.**