Infectonator! World Dominator - Taking over the world, one brain at a time.

'Infectonator World Dominator' (yes, that's is it's actual name) is a free online zombie game, that's equal parts addicting, frustrating, and awesome.
The player takes the form of some floating, mysterious force, roving over the planet and launching attacks on cities and towns all over the world. Attack a city brings up a small map, upon which all sorts of citizens, soldiers, rastafarians and secret agents are wandering aimlessly. The player begins the by initiating an infection somewhere on the map- the initial infected become zombies, who rampage around, eating and infecting the humans. By the end, either the humans will have wiped the floor with you, or your zombies will have taken over, reducing the town to rubble.
If that sounds simple, it's not. Well, not always. In the beginning and middle stages of the game timing and placing the initial explosion is quite the puzzle. Knowing when to use the other tools at your disposal- you can sling a few bombs to target particularly troublesome groups of soldiers, and there are a wealth of upgrades you can buy, as well as special zombies to hunt down and unlock- is what makes this game insanely addictive.
However, the longer you go on, the more powerful you become- the easier it gets, until you rarely have to do anything but watch the carnage for 30 seconds, move to the next city, and repeat.
That said, it's a lot of fun until then, and even dealing with that part for a while, I still felt compelled to beat the game...and then restart.
All in all, it's a perfect way to kill time for half an hour or so, and it's rather unique design, and tongue-in-cheek humour, make it a definite cut above most online games.
'Infectonator! World Dominator' can be played here. It was made by toge productions.
If you're looking for more fun online zombie games, check out my list.