Now normally, the thought of getting a virus on my computer fills me with dread. However, as soon as I started playing HexaVirus I discovered a new passion for bugs.

That's largely because this game is just so darned addictive. You start out with a gameboard filled with different colored hexagons. The object of the game is to remove the hexagons by getting different viruses to eat them (obviously it's not based on the scientific nature of viruses, but that doesn't matter).

A colored virus appears in the bottom left-hand corner of the screen. When you click to select it, all the touching hexagons of that color will be wiped away, freeing up more space on the gameboard. You need to select the color of the virus you want to lay down based on the position of the hexagons on the screen.

It sounds complicated but within a couple of tries of HexaVirus you'll understand exactly what's going on. You must clear the board within 30 moves, a challenge which becomes as infuriating as it is gripping. The sense of achievement once you've cleared the board is so immense that you'll be itching to go to the next level and try to clear it in one less move.

The graphics are fun and colorful and the animations of the little virus characters are cool too. Beware though that this PC version of HexaVirus has been ported from a Windows Mobile game, so the game screen is small.

Ultimately though, it's an innovative and thoroughly enjoyable puzzle game.