Serum X vs Sky
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Serum X
Uncover a revolutionary serum before it's misused. Employ detective skills in this point-and-click adventure to locate its hidden storage. Navigate a world of scientific progress and industrial change to secure the future.
- Detective gameplay
- Point-and-click mechanics
- Room escape puzzles
- Story-driven adventure
- Scientific advancements theme
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A game changer serum has been developed with the power to change the 20th century. Retrieve it before it falls in the wrong hands. Use your detective skills, sneak in and find where the serum is stored in this point-and-click / room escape game. With all the scientific advancements and the industrial revolution, all sorts of experiments are flourishing everywhere. The appliance of this experiments will define the future..
Sky
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Do you like puzzles? Do you like piracy? Of course you do! And we have the game for you to live out both dreams and avoid the gallows! In Sky Pirates: Puzzles & Plunder, you take to the skies as part of a crew of a mighty airship. Play multiple different puzzles to challenge your mind and enhance your ship. The golden age of piracy, the fantasy of flying through the clouds, and the ease of playing casual-style puzzle-games combine to create a unique gaming experience!
Screenshots
Verdict
The clearest difference is ads: Serum X at none against Sky's shown. Serum X also leads on iOS requirement (10.3 vs 15.0). Sky's advantage is update cadence (every 3 weeks vs every 4 months). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Serum X ships an update every 4 months, Sky every 3 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.
| Parameter | Serum X | Sky |
|---|---|---|
| Price | Free | Free |
| Rating | 1.6 (5 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 4 months | Every 3 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 99 MB | 368 MB |
| Age rating | 4+ | 12+ |
| Developer | Jose Lopez | RXR Gaming Ltd |
In-app purchases
Serum X
No in-app purchases
Sky
No in-app purchases
