Fun and challenging game – Six Logic: Use your Brain! Review

I'd like to see more backgrounds and characters made available. But what I could especially use would be an undo function to invoke after making an error. This feature would save time by ridding the player of the inconvenience of manually resetting each individual cell that is highlighted because of the error. But it's still a fun and challenging game.
Review by UkeleleBob on Six Logic: Use your Brain!.