Splinter Cell: Conviction may not be showing up on the Marketplace just yet, but the Xbox Live Deal of the Week has at least gone live. Orbital from BiteForge and Microsoft Studios is now on sale for $1.99, down from $2.99.

Orbital is all about shooting orbs into other orbs, destroying them and causing chain reactions. It’s got 3 modes of play, each of which changes the rules and aiming around a bit. The neon graphics are pretty enough. As I stated in our review, I really wanted to like Orbital, but it just never clicked for me. The aiming needs work, the game is unforgiving, and there’s no metagame tying it together. But a lot of people enjoy the game anyway, so you may want to give it a shot too.

Orbital is on sale for $1.99 for one week only. Shoot on over here to the Marketplace to get it.

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