Comparison

Otherworldly Zombies vs Hey Summer

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

Head to head
About

Otherworldly Zombies

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You've been reincarnated in an another world controlled by zombies. Let's come back from an another world. 6 worlds x 5 difficulty. You can play a total of 30 levels. If you reach the goal (transporter) without being caught by the zombies, the level is complete. If you get caught by a zombie the game is over. [How to play] Use the joystick at the bottom left to move it. Press the dash button at the bottom right to dash for a moment. Dashing reduces your stamina, but you'll recover it after dash. If you have more than half your stamina left, you can dash.

About

Hey Summer

Embark on a cool underwater adventure with intuitive swipe controls. Explore mysterious worlds, discover hidden paths, and enjoy a relaxing summer atmosphere with a chill soundtrack. The ocean is full of surprises and gentle challenges.

Highlights
  • Intuitive swipe controls
  • Underwater exploration
  • Relaxing atmosphere
  • Dynamic secret paths
  • Gentle challenges
Features
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Swipe to control is the key to victory. Dive into a cool summer adventure beneath the waves. Guide Summer across sparkling seas, discover hidden paths, and slip into mysterious worlds below the surface—all with smooth, satisfying swipe controls. About the Game In summer, let’s enjoy playing games in the cool sea. You can adjust Summer’s movement by swiping the screen left and right. Missed the lane? Don’t worry—drift into the unknown and explore the enchanting world under the sea. The ocean is full of surprises, gentle challenges, and moments of pure joy. Key Features Intuitive Controls: Swipe to control is the key to victory. Steer left or right with a single finger. Relaxing Vibes: Chill soundtrack, soft colors, and breezy summer atmosphere. Dynamic Paths: Stay on course or intentionally veer off to uncover secret routes. How to Play Swipe left/right to steer Summer. The sea is full of joy—have a great time with Hey Summer.

Screenshots

Otherworldly Zombies4 screens
Hey Summer4 screens

Verdict

The call

The clearest difference is ads: Otherworldly Zombies at none against Hey Summer's shown. Otherworldly Zombies also leads on update cadence (every 4 days vs every 42 months) and iOS requirement (11.0 vs 18.0). On price, in-app purchases and device support there is nothing between them.

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

Otherworldly Zombies ships an update every 4 days, Hey Summer every 42 months. The most recent releases landed on October 25, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 6 level
Otherworldly Zombies versus Hey Summer: the parameters behind the verdict, then further details
ParameterOtherworldly ZombiesHey Summer
PriceFreeFree
Rating—1.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 4 days — betterEvery 42 months
AdsNo — betterYes
In-app purchasesNoNo
Monetization—Ad-supported
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better18.0
Further details — not scored
Size101 MB295 MB
Age rating12+9+
DeveloperOsawa ShunsukeMatthew & Rouge

In-app purchases

None

Otherworldly Zombies

No in-app purchases

None

Hey Summer

No in-app purchases

Questions

Is Otherworldly Zombies free?
Otherworldly Zombies is free to download, with no in-app purchases.
Is Hey Summer free?
Hey Summer is free to download, with no in-app purchases.
Do Otherworldly Zombies or Hey Summer have ads?
Hey Summer shows ads; Otherworldly Zombies does not.
Which is updated more often, Otherworldly Zombies or Hey Summer?
Otherworldly Zombies ships an update every 4 days, and Hey Summer every 42 months. Most recently, Otherworldly Zombies was updated on October 25, 2026 and Hey Summer on November 3, 2026.

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