Poly Rules! vs Hipoxia
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Poly Rules!
A challenging sorting game where the rules dynamically change as you progress. It offers increasingly complex scenarios to test your cognitive abilities. Researchers can inquire about using the game for studies.
- Dynamic rule changes
- Increasingly complex scenarios
- Cognitive benefit focus
- Research support available
- Log storage and analytics (coming soon)
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PolyRules is a challenging sorting game where the rules change as you play. As you progress through the game you will encounter increasingly more complicated scenarios that challenge you in ways you can't imagine. The current release is our first prototype and we will update the game semi-frequently as we move towards a design that features tried and true game design to facilitate the cognitive benefits this game aids to provide. Researchers who are interested in using this game for their own studies please reach out to us to us through our support page for more information on how to best use this App. We have several ways to support you including a central server to store logs and automatic analytics which will be implemented in the coming weeks.
Hipoxia
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El agua marina tiene oxígeno, ¡pero puede agotarse! La hipoxia marina a menudo ocurre cuando los humanos contaminan el agua; algunos animales pueden alejarse nadando como los peces, pero los animales lentos, como los erizos de mar, no pueden moverse lo suficientemente rápido. ¡Ayuda a nuestro héroe, el sargento mayor, a escapar del agua con poco oxígeno y a salvar a sus amigos del peligro, sin ser devorado por sus depredadores! Puedes jugar con tu celular, tablet o computadora. ¡A divertirse!
Screenshots
Verdict
The clearest difference is update cadence: Poly Rules! at monthly against Hipoxia's every 4 months. On price, ads, 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.
Poly Rules! ships an update monthly, Hipoxia every 4 months. The most recent releases landed on October 11, 2026 and October 1, 2026 respectively.
| Parameter | Poly Rules! | Hipoxia |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (13 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Monthly — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 12.1 |
| Further details — not scored | ||
| Size | 111 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Northeastern University Information Services | Smithsonian Institution |
In-app purchases
Poly Rules!
No in-app purchases
Hipoxia
No in-app purchases









