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Watch trailer on Steam ↗Try them all!
oyajinojiike · Published by oyajinojiike
6 user reviews — 83% positive (6 reviews) · 8 achievements
Last updated 4 Oct 2026
A mysterious box is locked with a 4 to 8-digit code.Your only goal is to open it—with your own hands. No hints. No puzzles.But who needs them? If you try every number up to 9999... eventually, it will open.
£3.39
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Price history
Indie, Simulation · 2025 · More under £5 games
Dive into the challenge of unlocking a mysterious box by trying all possible codes—no hints provided—in this unique indie simulation experience from oyajinojiike.
About this game
About the Game
It's simple:
A mysterious box is locked with a 4 to 8-digit code.
Your only goal is to open it—with your own hands.
No hints. No puzzles.
But who needs them? If you try every number up to 9999...
eventually, it will open.
This is a game about perseverance, pattern, and reward.
Can you crack the code?
Streaming & Monetization
You are free to stream, record, and monetize content featuring this game—whether it's Let's Plays, walkthroughs, reviews, or anything else.
There are no restrictions on monetization methods, including ads, super chats, or other forms of support.
If you'd like to request explicit permission for any reason, feel free to contact us via X (formerly Twitter) or email.
How to Play
Click the ▲ and ▼ buttons to change digits.
Use arrow keys (←/→ to move, ↑/↓ to change digits).
Press Space or Enter, or click the treasure chest to submit your guess.
If the input matches the code, the chest opens.
Game cleared—and you earn generous rewards!
Skills
Though there are no hints, coins and gems will occasionally fall during gameplay.
These can be spent on optional skills to boost your efficiency just a little.
Skills are purchased via the title screen
They remain active until manually disabled
Using them is optional—you can still clear the game without them!
Difficulty Options
Choose between 4 to 8-digit code lengths
Each digit length has its own save slot
You can freely switch between difficulties
Only one save file per digit length is allowed
The longer the code, the greater the reward.
Clearing without using any skills also boosts your final reward.
Serious Mode
In Serious Mode, all skills are disabled.
But in return, the rewards skyrocket.
This mode is designed for players who want maximum challenge and maximum payout.
Clearing this mode also counts as completing Normal Mode for Steam achievements.
Tutorial
A short, basic tutorial is included.
Features a 3-digit version of the game
Perfect for learning controls and game flow
Takes just a few minutes to complete
System Requirements
Will my PC run this? →Minimum
- Requires a 64-bit processor and operating system
- OS: Windows11
- Processor: Ryzen 5 4500
- Memory: 8 GB RAM
- Graphics: GeForce GTX 1650
- Storage: 1 GB available space
Recommended
- Requires a 64-bit processor and operating system
Supported Languages
Latest news
AnnouncementsOfficial
Try them all!1.0.4
Try them all and open them! The 1.0.4 update of "Try It All and Open It! Changes regarding skills: When a skill is purchased (opened), the skill is changed to be activated at the same time. This function can be disabled from the checkbox in the upper right corner of the skill screen. If a skill cannot be activated at the same time due to a condition, it will not be activated automatically. Fixing gemstone colors Fixed a bug in which gemstones other than emeralds were not colored. Fixes related to achievements The description of achievements stated that achievements with a smaller number of digits than the clear digits could be earned. However, in actual operation, achievements with a smaller number of digits than the clear digits were not being earned. However, in actual operation, achievements with a smaller number of digits than the number of cleared digits were not being earned. Fixes for full screen mode: Fixed a bug where the UI hit detection would shift when changing from window mode to full screen mode. I would be very happy if you all could write a review.Read full article on Community Announcements (oyajinojiike_P)






