The full game of Go! Sudoku has been added to the PlayStation Store for £4.99.
The PlayStation Store description reminds you that you first must have downloaded the Go! Sudoku Starter Pack (don't worry, it's free) before being able to get your brain on over 1000 new puzzles, ranging from "easy to fiendish".
In an attempt to spice up the logical puzzle game you also get "animated HD visuals" and an online ranking feature. Your parents will love it, think of it as a step towards getting them to play MotorStorm.