Heyawake by Nikoli

Ultimately, the complicated rules and steep learning curve for newcomers is Heyawake's biggest obstacle. It's certainly a fun and challenging logic puzzle, but it's not the kind of game that you can just dive right into without some serious practice. The intuitive interface makes navigating the game a breeze and puzzler fans willing to invest some time into the experience will likely find a solid brain teaser with a decent amount of variety to boot.