I played the game and it's very nice, but there's some things that are bad:
1. There's no PAUSE button!
2. When I press the Tilde key to show the ghost, it appears during few seconds and then, dissapear! When I try to show it again, it won't!
3. I can't change the letters for tools in the options, when I quit the options menu, all original letters assigned to them are back!
Also, which kind of selection do you use:
a) Using letters
b) Using the mouse by selecting Clones first, then tools
c) Using the mouse by selecting tools first, then assign them to Clones