When Circadia loads up and you find yourself staring at the title screen waiting for something to happen, tap on the colored dot. That small interaction is all you need to know for this minimalistic puzzler.

OK, well it's not everything you need to know, but let's call it at least two thirds. Tapping a colored dot will send out a ripple of color and sound. When that ripple hits the white dot, the next stage unveils itself. That's just the beginning however. Soon enough two colored dots are on screen and you have to make their ripples hit the white dot at the exact same time. Some colors ripple faster than others so managing two dots (and then later on when three or more dots litter the stage), it becomes a matter of intuitive timing.

The small splashes of color ripple across a black backdrop, with the only sound being their utilitarian chimes. Circadia definitely taps into a unique part of the brain. Instead of thinking through the solution, it's more a case of timing and feeling, trusting in your understanding of what each dot is going to do before you begin a sequence. Some might find the tutorial stages a little drawn out and boring, and some may just be put off by the concept altogether, but if you enjoy your puzzle games, this is definitely worth a look.