Just a friendly tips for anyone who stuck in the first level. After the dialogue, you have to get all the player copies to reach the green light ball. You have to switch the controls of the copies by using a left mouse button click.
There are more levels than I thought, a lot harder than I thought. I died more than twenty times to reach the end of the game. For people like me, who is not talented in action games, repeating failure for success are needed to get to the game end. I have asked my friend to help me to get over the first switching platform level. I have to say that the first switching level is harder than the level immediately after. I would like to suggest to have rearrangement of level sequence. For me, the difficulties rockets in the first switching level. After I persist to play about 1 to 2 hours, I finally beat all the levels.
Though it may be hard to implement, I would like to suggest using a tab to switch characters instead of using a mouse click. A more clear instruction will be needed to tell the player how to switch the characters. A sign on top of the character may be needed (e.g. an upside down triangle marker) may be needed after the green light ball is on.
The music gives a cure and calm feeling and matches the theme to fight anxiety. I would suggest to add more sound effects (e.g. when jumping into the light ball or lighting up other characters).
Overall, the game is challenging (way more challenging than I can handle) and actually built my anxiety when I repeated the same failure and died too many times...I am glad that I finally beats all the levels. And for other players, if you can beat all the levels, I am proud on you too!