Assyria brings us a biology-based side-scrolling shoot em up called Bloodstream Raiders. Your task as the lone white blood cell in the body is to eradicate the viruses and other unhealthy molecules you encounter. Aside from your anti-body shots you can also get paracetamol (the European Wonder drug) which helps bring down the fever and sustain your game (at 41 C the game ends) and Antiviral bombs that destroy pretty much all the bad stuff on the screen.

The controls are a simple touch button interface, one for movement direction and one for shooting direction. They aren’t ideal but they work fairly well. At times I found it hard to maintain any type of pinpoint accuracy and I often found one could stay in one place and shoot enough bad things to survive.

The game tracks some stats thanks to the Agon system which, like Scoreloop and OpenFeint, gives you friends lists, awards and leaderboards. The game also gives you two modes - campaign and survival. In campaign you go organ by organ through six stages to cleanse the body of the bad stuff while in survival (which has two difficulties casual and hardcore) you survive as long as you can your survival lasting in minutes as you wipe out wave after wave.

The good thing is contact with the other molecules is not deadly though there are some non-reactive molecules (look like fat or cholesterol) that you can neither shoot nor move through which add extra challenge to the game.

Really, aside from the clunky controls the game is quite well done. Because of the small control circles I found it hard to move my cell in the proper direction most of the time and generally took up a position that allowed me to strafe across the screen and only move when necessary to collect things. It didn’t really detract from the game but I could see it being better with better controls.

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