Alert! Alert! OMG-Z! The City of Redfield has been hit by an outbreak of exploding zombies! For cool and unimportant reasons these suckers literally explode when shot, showering their zombie brethren with gore and causing chain reactions of showering zombie gibs with just a single bullet!

Armed with this knowledge (and bullets coated in a zombie-exploding pathogen) your elite unit is dispatched to the epicentre of the outbreak. Your mission? Succeed where the police and army failed and clean up the city!

For reasons that aren't important right now, all but one of your team is killed before arriving at the outbreak's epicentre, leaving YOU to deal with thousands of zombies ALONE.

Use your chain reaction skills to explore 81 waves of zombie hell across 32 environments. Earn 324 shiny medals and cold hard cash, and use it to buy 70 different upgrades all designed to MAKE ZOMBIES EXPLODE!

Reviews far one of the best Minis available on the store. - 5/5
Great pacing and a satisfying hook make OMG-Z difficult to put down. - 4/4 (Amazing)
The most fun I've had yet playing a PSP game. Time disappears while playing this game. - 5/5
Metal Arcade's blasting good fun - 5/5
Lincolnshire Echo
highly addictive... a perfect pick-up-and-play game to lose yourself in for hours and hours. - 9.5/10
PSPminis original and addictive puzzle game... OMG-Z is money well spent! - 91%
...a monstrously addictive quick-fire affair that utterly nails what on-the-go handheld gaming should be about. - 9/10
Eurogamer this game, right now, but let the dog out and feed your children before you start playing. - 4.5/5
OMG-Z has turned out to be one of the most addictive and perfectly formed handheld games I have played in quite some time. - 9/10
Brash Games
OMG-Z is one of the best games I've played this year! - Rated A - Editor's Choice
Gaming Nexus
This PSP Mini is dirt cheap and one of the best games I've played all year. - Rated A
Defunct Games
A deceptively addictive title that will keep you busy for hours - 4.5/5
The game is so addicting its not even funny. Bravo Laughing Jackal, bravo. - 4.5/5
WeTheGamerz addictive little strategy-type game that would be perfect for short trips with your PSP or bursts of zombie action on your PS3. - 8.7/10
game freaks 365
OMG-Z is the most fun I’ve had with a Minis game for some time - 8.5/10
OMG-Z is a good investment for fans of the undead and those who are not fans - 83%
SOS Gamers
...OMG-Z is the mini of the week because it's more addictive than shelling pistachios. - 8/10 (Mini of the month award)
PlayStation Official Magazine UK
It's impossible to not feel like a badass when using three or four bullets to take down an entire screenful of enemies! - 8/10
The Koalition
...go and grab this puzzler with brains now. - 8/10
If you’re itching for something new in the zombie genre then you should totally check out OMG-Z. 4/5's highly addictive and fun as you blast your way through. - 4/5
Blueprint Review
If you're into tactical/strategy games that rewards patience with big pay offs then you might want to check this game out. - 78%
...a fun little game, with a great retro feel to it which gives off that awesome, frustrating completionist buzz that old NES games used to give off... 7/10
Final Boss Fight
Pocket Gamer - Silver Award