On Ver1.2, I added the easy mode to the game for players who think it's too difficult

It's a hidden feature, and I recommend not to use it unless you're really stuck

You can access it by pressing the 7 key on your keyboard (not the 7 key on your numpad) 10 times
It'll play a sound effect, and the easy mode will be enabled
This setting won't be saved, so you need to do it again to enable it if you close the game