Killer Sudoku

★★★★★ Harder than most, or should I say it was a Killer. Some of the sudoku games on here are similar, and all have this problem for me. It is difficulty seeing the small number indicating the total sum e.g. 13 looks very similar to 18. I know it's my eyes that are the problem, watering but when I struggle to see it looks identical and very blurry. Then I just need to switch it off for a short time to relax eyes. Apart from that it's a great game to play.

★★★★★ This is by far the best killer sudoku online. If you are finding killer apps too easy, this is a really challenging, hardly no ads and when there are, they are not aggressive or frustrating to get rid of. Note to advertisers - nothing turns you off purchasing a product more than an advert that is deliberately stuck on your screen. Excellent job, thank you devs, this is a fantastic piece of work and I look forward to trying your other products.

★★☆☆☆ Was 5 stars with the banner ads, but now the random ones that pop up while you're doing a puzzle? Screw that

★★☆☆☆ Used to be a great experience, and now it pops up ads in the middle of playing redirecting straight to play store. Uninstalling and going to a different one. Was different ads then the banner at the bottom.

★★☆☆☆ The problem was there was no way to get at the start button to begin the game. I found a stupid hack though. Orient the screen 90 degrees, start the game, and orient back too normal to continue playing. Yeeeesh. What an ordeal just to get at playing.