Comparison

Z vs OPM

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

Z

Establish a fortified base, scavenge for resources, and upgrade your hero to survive relentless zombie hordes in this post-apocalyptic RPG. Strategize your defenses and combat to overcome mutated threats and build a lasting legacy.

Highlights
  • Base building and defense
  • Resource scavenging and crafting
  • Hero leveling and skill customization
  • Intense zombie combat
  • Challenging boss fights
  • Post-apocalyptic world immersion
Features
Read full description

The world has fallen, but your fight has just begun. Welcome to Z-BREAK: VOIDBASE, the ultimate zombie survival RPG where your strategic mind and combat skills are your only lifelines. Step into a desolate wasteland overrun by the undead. Your mission? Establish an impenetrable Voidbase, scavenge for vital resources, and evolve your survivor into a relentless zombie hunter. Every day is a struggle for survival, and every night brings a new, deadlier wave of enemies. BUILD YOUR ULTIMATE SAFE HAVEN Your base is your fortress. Construct and upgrade defenses, traps, and resource-gathering facilities. Manage your camp wisely to ensure you have the materials needed to craft powerful weapons and gear. GATHER RESOURCES TO SURVIVE Venture into the dangerous unknown to scavenge for scrap, food, and building materials. The wasteland is unforgiving, so plan your expeditions carefully. Risk it all for rare loot, but make sure you make it back alive! UPGRADE YOUR HERO You are the last hope. Gain experience from every battle to level up your character. Unlock devastating new skills, equip heavy-duty armor, and customize your loadout to match your playstyle. From stealthy scavenger to heavy-hitting defender, the choice is yours. DEFEND AGAINST THE HORDE The Z-Break is relentless. Face off against massive waves of zombies, each with unique abilities and terrifying boss mutations. Position your defenses, lock and load, and hold the line. KEY FEATURES: Base Building Strategy: Design, build, and fortify your own Voidbase. Intense Zombie Combat: Fight off endless waves of infected monsters. Scavenging & Crafting: Loot the wasteland and craft epic gear. Deep RPG Mechanics: Level up, unlock skills, and customize your hero. Challenging Boss Fights: Test your limits against mutated undead threats. Immersive Post-Apocalyptic World: Stunning graphics and a dark, atmospheric soundtrack. The zombies are at the gates. Will you become wasteland food, or will you build a legacy? Download Z-BREAK: VOIDBASE now and start your survival journey!

About

OPM

Features
Read full description

Become the ultimate one-punch hero in this timing-based action game ONE PUNCH IS ALL IT TAKES Every fight comes down to one perfect moment. Read the enemy, find the rhythm, and unleash a strike powerful enough to end it all in a single blow. MASTER THE ART OF TIMING Precision is everything. The difference between a devastating hit and a wasted attack is razor-thin — only those who have truly mastered their timing will rise to the top. GROW STRONGER WITH EVERY FIGHT Level up your stats, unlock new abilities, and build a hero powerful enough to take on any challenge. Every victory brings you one step closer to true strength. FACE INCREASINGLY DEADLY ENEMIES From standard grunts to fearsome boss encounters, every enemy presents a new test of skill and timing. Adapt or be overwhelmed. DAILY CHALLENGE & LEADERBOARD A brand new challenge drops every hour. Push your limits, post your score, and climb the global leaderboard to prove you're the strongest. One punch. No mercy. Are you strong enough?

Screenshots

Z4 screens
OPM4 screens

Verdict

The call

Z and OPM are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 14, 2026 and October 25, 2026 respectively.

ScorecardNo meaningful differences
Z versus OPM: the parameters behind the verdict, then further details
ParameterZOPM
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 2 weeksEvery 2 weeks
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supported—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size277 MB159 MB
Age rating12+12+
DeveloperAleksandr KrasyukYoTech

In-app purchases

None

Z

No in-app purchases

None

OPM

No in-app purchases

Questions

Is Z free?
Z is free to download, with no in-app purchases.
Is OPM free?
OPM is free to download, with no in-app purchases.
Do Z or OPM have ads?
Both Z and OPM show ads.
Which is updated more often, Z or OPM?
Z ships an update every 2 weeks, and OPM every 2 weeks. Most recently, Z was updated on October 14, 2026 and OPM on October 25, 2026.

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