Unlock The Door! vs Impossible 50
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Unlock The Door!
A puzzle game where players sort chains to unlock doors. It's a simple yet engaging challenge to avoid getting tangled.
- Chain sorting gameplay
- Door unlocking puzzles
- Simple mechanics
- Engaging challenge
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Can you sort all of the door chains and not get tangled? Listen! Someone is knocking on your door!
Impossible 50
A precision puzzle game where you draw a single line to cut various shapes as close to 50/50 as possible. It offers 150 handcrafted levels with increasing difficulty, from simple shapes to complex objects and animals, with no timers or pressure.
- Draw one line to cut shapes
- Achieve 50/50 splits
- 150 handcrafted levels
- Multiple themed worlds
- Precision-based scoring
- Daily challenges
- No timers
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Can you cut a shape exactly in half? Impossible 50 is a precision puzzle game where your goal is simple: draw one line and split each shape as close to 50/50 as possible. It sounds easy. It is not. Every level gives you a new 2D shape. You draw a single slice, then the game measures how close your cut is to a perfect half. The closer you get to 50/50, the better your score. Start with simple shapes. Then face harder objects, abstract forms, animals, letters, and symbols where the perfect line is not obvious. Features - Draw one line to cut each shape - Try to split every object exactly 50/50 - 150 handcrafted levels - Multiple worlds, including shapes, abstract objects, animals, letters, and symbols - Precision-based scoring - Star rating system - Daily challenge with a new shape - Replay levels to improve your score - Clean 2D design - No timers, no pressure Impossible 50 is made for players who enjoy simple puzzle games, line drawing games, geometry puzzles, and accuracy challenges. The rule is simple: Cut it in half. Exactly.
Screenshots
Verdict
The clearest difference is update cadence: Unlock The Door! at every 2 days against Impossible 50's every 9 days. Unlock The Door! also leads on device support (3 vs 1) and iOS requirement (9.0 vs 16.4). On price, ads, in-app purchases and monetization model 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.
Unlock The Door! ships an update every 2 days, Impossible 50 every 9 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.
| Parameter | Unlock The Door! | Impossible 50 |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 9.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 151 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | 庆龙 刘 | Yigit ERKAL |
Customer experience
Unlock The Door!
Impossible 50
In-app purchases
Unlock The Door!
No in-app purchases
Impossible 50
No in-app purchases
Questions
Is Unlock The Door! free?
Is Impossible 50 free?
Do Unlock The Door! or Impossible 50 have ads?
Which is updated more often, Unlock The Door! or Impossible 50?
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