Overclock your brain with this $15 puzzle bundle, including The Witness, Talos Principle and more

Humble’s new $15 collection seven visually striking, puzzle-rich games is the perfect way to flex your mental muscles. The highlight of the bundle is easy The Talos Principle: Gold editionwhich combines the base game with three pieces of post-launch DLC and additional bonus content. The Talos Principle takes over the structure of the puzzle room Portal and expands it by introducing you to increasingly complex mechanics. unlike Portal, Talos Principle uses a more non-linear approach, allowing you to branch out to different rooms if a single puzzle proves too difficult.

Sleep no further The witness, a first-person puzzle game with over 500 interlocking puzzles. Developed by Jonathan Blow’s development studio Thekla Inc., The witness most closely resembles the classic 1993 PC title Mystthanks in part to its striking visuals and esoteric solutions.

If you prefer a simpler title to start with in this bundle, give it a try The pedestrian. In this relatively relaxed puzzle platformer, you guide a stick figure through a series of levels based on urban signage. Yet it is not all easy. The pedestrian features plenty of interesting mechanics to keep you on your toes.

In addition to this trio of excellent titles, you also get Steam versions of the Multiple garden, Taiji, Superliminaland the charming pixel pusher, Patrick’s Parabox.

As with virtually every Humble bundle, a portion of every bundle sold goes to a nonprofit organization. This bundle helps raise money for the Global FoodBanking Network. If you would like to adjust how much of your purchase goes to the charity, the developers and to Humble, look for the ‘custom donation’ option on the right side of the page and select the ‘adjust donation’ tab.