Globetrotter is as simple as it gets. You're given a map and you're given a location, and you must click on where you think that location is on the map. Sure, this is easy if you're looking for New York, United States or London, England, but good luck with Tunis, Tunisia on your first go, and believe me, Australia can be trickier than you may think.

Basho Kioku is the latest puzzle game from prolific designer Yoshio Ishii. You are faced with a grid of 36 squares, and your goal is to click on each of them in turn. Each round, a random combination of these squares lights up orange, and you must choose one of them. There is no indication of which squares you've previously selected, but if you pick a square more than once, you lose a life. It's a nearly flawless koan that plays on the tension between the randomness of your choices and the solidity of your strategy.

The numbers are falling! Fortunately, you've got the fundamental theorem of arithmetic on your side! In Prime Shooter, a math game of prime numbers created by Philip Dorrell, destroy prime numbers directly, or reduce composite numbers by dividing them by prime factors less than 20. Each number you destroy scores you one point, and the numbers get larger and fall faster as your score goes up.

File this one under brain training games: Math Mountain is an addictive arithmetic game wherein you climb a mountain, competing against another person or the computer, by answering math questions correctly. If you're not very good at arithmetic, Math Mountain is a fun way to practice; if you're already good, then why not give your brain some exercise?

We here at Casual Gameplay have been fans of the work Yoshio Ishii has been doing in Shockwave and Flash for several years now. He may be best known for his Neko series of games (neko means "cat" in Japanese), though he has also created some of the best Panzo games as well. His latest effort is this beautiful and delightful game that will give your brain some stimulation as you play.

Created by Philipp Lenssen, Games for the Brain is a series of almost 40 different puzzle games to exercise and challenge your brain. It's a remarkably well-designed site that features a good variety of puzzles to tickle your gray matter.

Created by Philipp Lenssen, Games for the Brain is a series of almost 40 different puzzle games to exercise and challenge your brain. It's a remarkably well-designed site that features a good variety of puzzles to tickle your gray matter.

Which side are you: right-brain or left-brain dominant? While right-brain dominant people use their intuition and emotions to guide their decisions, left-brain dominant folks are more sequential and time-oriented in their approach. Perhaps you are middle-brain dominant, meaning that you vacillate between the two hemispheres when making decisions. If unsure,...