Aha! Sensible Sophie Houlden, of Sarah's Run, BoxGame and The Linear RPG fame, has sensibly done the sensible thing for her new, vector-y maze navigation game Swift*Stitch and sensibly released a free demo. It runs in a browser, and you should absolutely play it - it's (very) loosely in the vein of Snake, but all controlled with two mouse buttons. One makes your right-angular character immediately move downwards, the other temporarily slows it down so you've got time to move downwards before you smash into a wall. And then it builds quick-thinking puzzle-complexity from there thanks to gradual additions to the environment.
It's very clever, a little bit fiendish, I'm really quite fond of it and you can buy the full thing for $7 if the demo rings your bell. There's also a video below if you can't/won't run the Unity plugin for the demo.
The full thinger has 42 levels and 7 speed settings, so there's an awful lot done with the minimalist concept. More details and buy-links over here.
ATTENTION ALL INDIE DEVELOPERS: RELEASE DEMOS. Honestly.