Starsix Sudoku Demo

This looks like it would be a lot of fun, and I hate giving low ratings, especially to smaller developers, but this is unplayable as it is. Without notes, its too hard to keep track of, and what looks like undo is restart, and the eraser clears everything. Its impossible to solve logically without pen and paper nearby. Try other Logic puzzles, like "Sudoku The Clean One" and add some of the basics, I will happily rate 5, if I can solve a puzzle without guessing or keeping a notepad nearby.