Thank you for the feedback!
I like the idea to change the mouse cursor to a circle. You are right, that it gets in the way sometimes.
The default keybind for the alien trash is 'E'. But that is only mentioned on the info board in level 2 and 3. I have to make that more clear.
You can also change the keybinds in the settings btw :)
In the next version i will change that you have to click on the open note to close it (or add a close button) instead of having to press escape. Thanks again!