Sea Boom vs Case Closed
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sea Boom
Defend a vibrant sea reef from an onslaught of monstrous invaders. Guide exiled sea people in their fight to reclaim their home and restore peace to their underwater kingdom.
- Reef defense gameplay
- Fight sea monsters
- Help exiled sea people
- Restore underwater kingdom
- Engaging storyline
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Once upon a time a sea reef was inhabited with good people. But the dark times came to their lands. The reef was attacked by sea monsters and those people were exiled. However, they didn't mean to give up. Help these sea people in defending their reef.
Case Closed
Engage in a spy-themed puzzle adventure without time limits or in-app purchases. Guide your hero through challenging missions to collect points and close dossiers, ensuring global safety. The game offers a progressive difficulty curve with tutorials for new elements.
- Addictive puzzle gameplay
- No time stress or lives system
- Completely free with no ads
- Progressive difficulty levels
- Tutorials for new items
- Walkthrough videos accessible
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Case Closed is an addictive puzzle game from 2020, designed to play in waiting rooms and other places, without any time stress or 'out of lives' messages or having to spend money on power-ups. The game is completely free with no advertisements, no banners, nothing. Our hero Casey, having completed 'Spy School' (see Case Open) is now a spy on a mission. His objective is to solve puzzles and close each dossier to help the world stay safe. He will encounter many difficulties and sometime these seem impossible to solve. Whereas in 'Spy School' the problems were static (no moving objects), in real life there are all sorts of things to interact with, and the mission space is often larger than the classroom settings from before. Goal: Solve 20 dossiers with each a number of missions In each mission guide Casey to the exit by collecting all required points. The game starts with easy levels and builds up to much more difficult levels. Every time a new item is introduced you'll get some tutorial missions. If you register you get 5 skip options which allows you to skip 5 missions of your choice, when you solve a previously skipped mission, you regain the skip. There are several walkthrough videos available on our website, accessable directly from the app by using the pause screen (click on the exit button in the right top when playing a mission). Every mission has been fully tested and can be solved, we guarantee it. We hope you enjoy the game, Jake Solutions
Screenshots
Verdict
The clearest difference is rating: Case Closed at 5.0 against Sea Boom's 4.0. Case Closed also leads on in-app purchases (none vs 3) and update cadence (every 2 weeks vs every 15 months). Sea Boom's advantage is iOS requirement (9.0 vs 11.0). On price, ratings volume, ads 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
Both are free to download. Sea Boom sells 3 one-off in-app purchases. Case Closed asks for nothing beyond the download.
Case Closed holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
Sea Boom ships an update every 15 months, Case Closed every 2 weeks. The most recent releases landed on October 22, 2026 and October 24, 2026 respectively.
| Parameter | Sea Boom | Case Closed |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 15 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 68 MB | 52 MB |
| Age rating | 4+ | 4+ |
| Developer | Denis Sokolov | Cornelis Aerts |
Customer experience
Sea Boom
Case Closed
In-app purchases
Sea Boom
- Disable Ads$0.99
- Unlock All Levels$0.99
- Unlock All Reefs$0.99
Case Closed
No in-app purchases









