Trapped in a cave. Laser things shooting at you. Buttons everywhere. Spikes even more everywhere. It's a normal day for our featureless friend in Focus, a puzzle platform game originally released in 2009 by Karoshi author Jesse Venbrux. Ported to the browser world by Joseph Ivie, Focus features over 50 levels of extra difficult action, sticking you in enclosed rooms with all manner of dangers and challenging you to use your platforming skills to make it out alive.
Focus is built around a standard platform base where you walk and jump around a series of single-screen levels. Each room has a door, and each door can only be opened if you trigger the yellow switches planted in the walls, floor and ceiling. Sometimes you can just step on a button, but other times you'll need to trick a robot to fire at you in order to toggle it. Standard fare, and challenging of its own accord, but then you introduce the game's main gimmick: the focus ability.
Tap the [A] key to start the focus. A ring appears around you along with a fancy pointer you can move with the [arrow] keys. Choose your destination, minding both distance and direction, then release to fling yourself around. Not only can you travel great distances almost instantaneously, you can also jump through solid walls, making focus both extraordinarily useful and an awesome trick to show off at parties.
Learning to use focus will take some time, but once you do, you'll be hopping around the game like a boss. There are plenty of challenges ahead of you, almost none of which can be completed without concentration and some trial-and-error. Focus is very friendly to failure, though, and when you start scratching the surface of the game, you'll realize just how intricate and entertaining one simple ability can be.