Ever been trapped in a cave, unable to move because bats kept removing everything from behind you and have yet to assemble the ground in front of you? Yeah, me too. This is exactly your situation in Cave Chaos, a new release from Nitrome. A "jump and run and avoid" kind of game (similar to Canabalt in some ways), your goal is to make it through each level of the cave without falling into the dark abyss below. Problem is, you're on the bats' schedule, here, and the ground only exists in the narrow window between when they build it and when they carry it away!
Use the [arrow] keys to move and jump, your only consistent actions throughout the game. As the bats drop off barrels, boxes, solid ground, boulders and other obstacles, simply maneuver yourself to the best possible position, nudging things to the side and charging your way forward. Well, charge in a cautious, conservative kind of way. Cave Chaos isn't necessarily a fast-paced game.
A few levels in you'll start to encounter enemies, many of which bug you in fantastic new ways! You'll also run into fun (read: not fun) new and inconveniently-timed obstacles, such as piles of rocks or a massive rolling boulder. Stupid bats. Fortunately, power-ups also appear (if you can grab them) that give you new abilities such as the double jump.
If you've got a few minutes to kill and can handle a few light tests on your reflexes, Cave Chaos is a great time waster!