Reef Defender vs Happy Penguins 3D
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Reef Defender
Explore the connection between land and sea through an engaging game inspired by ancient Hawaiian stewardship practices. Play as a shark and learn how actions on land impact the ocean ecosystem.
- Learn land-sea connection
- Ancient Hawaiian stewardship concepts
- Play as a shark
- Educational gameplay
- Ocean ecosystem focus
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The ancient Hawaiians knew that what happens on land affects the ocean, so they used a system of land and sea stewardship involving the entire ahupua’a (watershed) from land to sea. You can learn about the connection of land and sea by playing the game Reef Defender. The good guy in Reef Defender is the shark.
Happy Penguins 3D
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You see a foggy labyrinth in the ocean, a mountain range on the horizon, but there’s no time to admire the scenery, you need to act! You have five penguins that you need to navigate through the maze and prevent the sharks from eating them. The more babies get to the finish line, the more bonus coins you receive. If penguins collide with each other, one of them drops out. Go from level to level, earn stars, enjoy the scenery and become the winner in the Happy Penguins 3D arcade! Functions: 1) Guide the penguins through the maze! 2) Do not let sharks eat penguins. 3) Earn coins for every penguin who has reached the finish line. 4) If penguins collide with each other on turns, one of them drops out, so be careful! 5) Enjoy the fun arcade Happy Penguins 3D game!
Screenshots
Verdict
The clearest difference is device support: Happy Penguins 3D at 3 against Reef Defender's 1. On price, update cadence, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Reef Defender ships an update every 54 months, Happy Penguins 3D every 43 months. The most recent releases landed on October 24, 2026 and September 14, 2026 respectively.
| Parameter | Reef Defender | Happy Penguins 3D |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 54 months | Every 43 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 16 MB | 77 MB |
| Age rating | 4+ | 4+ |
| Developer | State of Hawaii | PAMPAM, TOV |
In-app purchases
Reef Defender
No in-app purchases
Happy Penguins 3D
No in-app purchases
Questions
Is Reef Defender free?
Is Happy Penguins 3D free?
Do Reef Defender or Happy Penguins 3D have ads?
Which is updated more often, Reef Defender or Happy Penguins 3D?
Other comparisons
