Since the game was a console exclusive, you can find it through the following methods:
(also known as Rubik's Puzzle World in Europe) is a puzzle video game released in 2008 for the Nintendo DS and Wii. There is no official digital version available for direct download on modern PC or mobile storefronts like Steam or the App Store. How to Play Rubik's World Today Download Rubik's World
You can use software like DeSmuME or MelonDS to run the DS version on a PC, provided you have the legal right to the game's ROM file. Since the game was a console exclusive, you