The best puzzle games reveal their brilliance immediately. Spend five minutes in the training mode and you will know Polarium is undeniable.

After seeing a prototype Nintendo demanded a version of this for DS, but the GBA version is more refined & released later. Daily puzzle mode will last you a year. One-handed control for commuting is genius!

In August 2013 I decided to play through all 365 puzzles and just managed to finish them by New Years. Loved it.