Game Overview

Gameplay

OMG-Z is at its best when you stop treating it like a straightforward shooter. You shoot a zombie to set off an explosion, then try to turn that first kill into a cascading disaster for everything nearby. A successful chain has the satisfying logic of a good puzzle answer: one carefully chosen shot can accomplish far more than several rushed ones.

The early appeal is immediate, but the upgrade system gives the idea room to grow. Kills earn money for improvements such as additional bullets, larger explosion radii, and oil barrels, so your options expand as you work through the game. The game includes five zombie classes, while 70 upgrades give committed players plenty to chase.

That said, OMG-Z asks you to enjoy repetition and refinement. Its more than 80 levels are built around the core decision, figuring out where your first shot should go, and trying to extract a better result. The 324 medals are a strong incentive if you love squeezing extra value from these challenges, but they can feel like a long grind if you only want a quick run through.

The payoff comes from those moments when a layout suddenly makes sense. You see the opening, commit to it, and the zombies take care of the rest in a chain of explosions. It is a focused, clever loop that rewards deliberate play far more than frantic trigger pulling.

Graphics

OMG-Z uses a gritty comic-book-inspired zombie look, with artwork influenced by artists associated with The Walking Dead comics and MadWorld. That is a fitting match for a game built around explosive undead chain reactions: it gives the violence a deliberately pulpy, illustrated edge rather than aiming for realism.

Story

Zombies are the documented threat in OMG-Z, and for me the appeal comes from turning their presence into a puzzle of blast radii, spacing, and chain reactions.

That simplicity helps the game get to its point quickly. Each successful sequence creates its own tiny action story, beginning with a single shot and ending in the kind of escalating carnage you planned just well enough to claim credit for.

My recommendation rests on the zombie chain-reaction premise. Planning an explosive setup is the attraction I would look for here.

Overall Experience

OMG-Z is a smart fit for you if a compact puzzle-shooter sounds better than a broad zombie adventure. It understands the pleasure of setting up a reaction, watching it unfold, and immediately wondering whether a different first shot could have done even better.

The amount of content is generous for such a tightly focused idea, with upgrades and medals providing additional goals. Still, the game lives or dies on whether its chain-reaction structure clicks for you. If it does, the challenge is making each shot count.

It lands as a strong, specialized PSP action-puzzle game with a satisfying core and a narrow but committed focus. Give it a chance if you enjoy score-minded experimentation and chain reactions more than narrative spectacle. For background on the original release, the original PSP announcement captures the game’s blood-soaked pitch well.

Retro Replay Score

7.8/10