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Cubes vs. Spheres is a delightful gem of a game from ShockPanda Games, who also brought us the less popular Space Bunnies. It's a physics-based turret defense game, in which you launch spheres against an oncoming horde of cubes. Gameplay is simple and elegant, and the minimalist, almost monochrome style of the game is quite unique. Actually, this is definitely one of the more unique games you'll play in a while.
I know not the cause of this great geometric conflict of the ages, nor do I know the motivations of either party at war. All I know is that there are some cubes that need smashing. By swiping or tilting, you'll move the camera, swiping upwards to launch your sphere. You don't have to shoot completely straight, and the longer your swipe is, the higher and farther your sphere will go. All you have to do is keep all cubes away from your actual launch pad. Once three make it past the barrier, game over.
Cubes come in a few forms, such as the normal red, tougher black, or stealthy transparent (though not invisible). There are also larger cubes that will explode into smaller ones when destroyed. Luckily, as tougher cubes show up, you'll unlock better spheres, starting with upgrades to the default blue sphere, which you can split into three or five separate spheres after launch for some real devastation and ground coverage. There are also exploding spheres, ice spheres, homing spheres, and even cube attracting bombs that are just like the pipe bombs in the cooperative first person shooter game Left 4 Dead. But really, once you have the five splitter sphere, you're pretty set. The other spheres are more situational, to get you out of tough jams.
The excellent physics really make this game fun. Everything behaves as you'd expect it to. Blasts knock cubes in the right direction, including towards you, meaning you have to be careful. Cubes explode into a shower of tiny cube shards when destroyed, and those cube shards can also damage and destroy enemy cubes, which make for fantastic chain reactions and high scores. The game is just a pleasure to behold, despite being very low on textures. There are thirty main levels plus a survival mode. If I had one complaint, it would be that some levels drag on, with you cleaning up cubes that are no threat to you, and thus boring. Otherwise, this game is fantastic, and I fully recommend it for one dollar.