Odd Machines vs PRISM
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Odd Machines
Embark on a 3D escape room adventure as a treasure hunter seeking a lost artifact. Solve intricate mechanical puzzles, uncover hidden objects, and unravel mysteries within an ancient temple. Collect fragments of a powerful stone to escape.
- Solve unique puzzle boxes
- Explore an ancient temple
- Collect fragments of a lost stone
- Immersive audio experience
- Multi-language support
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You are a legendary treasure hunter, looking for the Stone of Silence, a powerful artifact that got lost in an old temple. There, you will find a series of weird machines full of puzzles to crack to gain your freedom! Odd Machines: Lost Artifacts is a 3D escape room puzzle game where you have to solve complex mechanical puzzles, discover hidden objects, and unveil intriguing mysteries! Dive into a world where cryptic vibes, complex mechanisms, and smooth controls from top escape room games blend to challenge your brain skills. You'll tackle unique puzzle sets on a mysterious, gripping adventure. Every machine is crafted to deliver the ultimate escape and exploration thrill. Play the first 3 levels for free! SOLVE UNIQUE PUZZLE BOXES Embark on a puzzling adventure with an eclectic mix of original Victorian machinery, classic and architectural enigmas EXPLORE AN ANCIENT TEMPLE Step into a mesmerizing world where every move you make reveals new mysteries and changes! COLLECT ALL THE FRAGMENTS OF THE STONE OF SILENCE Once you get all 8 pieces of the lost stone, you'll be transported into a mystical scene where you'll have to crack numeric puzzles to put the pieces together and finally escape the temple IMMERSIVE AUDIO The sound effects and tunes are so mind-blowingly good that will whisk you away on an unforgettable, vibe-filled adventure! MULTI-LANGUAGE SUPPORT* Odd Machines: Lost Artifacts is available in English, French, German, Italian, Japanese, Korean, Portuguese, Russian, and Spanish. *The game language changes based on the device settings
PRISM
A logic puzzle game where players manipulate light beams by rotating pieces to illuminate crystals with specific colors. It features 240 unique, machine-proven puzzles across six chapters, teaching real optics principles.
- Light beam manipulation
- Color matching puzzles
- 6 chapters with 240 levels
- Real optics principles
- No ads or in-app purchases
- Offline play
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Tap, and the light bends. PRISM is a puzzle with exactly one rule. Tap a piece and it turns 90 degrees; the light instantly finds a new path. Light every crystal with precisely the color it asks for, all at once, and the board is solved. The controls need no explanation — one tap is all there is. If you want to know how light actually works, that is in here too. ■ Six chapters, 240 puzzles I. Reflect — mirrors turn light by 90 degrees II. Split — a half-silvered mirror passes light and reflects it at once III. Disperse — a prism breaks white light into red, green and blue IV. Mix — two beams meeting at one crystal become a new color V. Refine — filters keep only what you want. Overshoot and you fail VI. Converge — everything you have learned, on one board ■ Every puzzle has exactly one answer All 240 levels were machine-proven to have precisely one solution before shipping. No configuration works by accident, and no piece is decoration — rotate any of them and the solution breaks. The par shown on each level is not an estimate either; it is the true minimum, found by exhaustive search. ■ Nothing gets in your way · No ads · No in-app purchases · No account, no sign-in · No networking — the app never asks for internet access · No data collected · No lives, no energy, no timers · No locked levels — stuck? just move on to the next one You buy it once. That is the whole transaction. ■ This is real optics The angle of reflection, dispersion through a prism, additive color mixing, selective absorption in a filter — every rule in this game comes from real physics. Entering a new chapter shows you the principle behind it on a single card. Tap once to dismiss it, or read them all later under "How light works". It also states plainly where the game simplifies the physics. ■ If color is hard for you to tell apart Every crystal carries its required color as a shape as well. Red is a triangle, green is a square, blue is a circle. A yellow crystal shows a triangle and a square side by side. You can finish every puzzle in this game without seeing color at all. ■ About the sound The pitch of each rotation depends on where the piece sits on the grid — higher toward the top, lower toward the bottom. Solving a puzzle turns your hand into a short melody. It only uses a pentatonic scale, so no order of taps can sound wrong. Turn the sound off and haptics take over the same job. ■ It is light Nothing you see or hear was authored as a file. Apart from the app icon there are no images and no audio inside; every beam of light and every note is computed as you play. All 240 puzzles compress to 9 KB of data.
Screenshots
Verdict
The clearest difference is price: Odd Machines at Free against PRISM's $1.99. PRISM's advantage is review sentiment (100% vs 61%) and in-app purchases (none vs 3). On ads, device support and iOS requirement 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
Odd Machines is free to download; PRISM costs $1.99 up front. Odd Machines sells 3 one-off in-app purchases. PRISM asks for nothing beyond the download.
Odd Machines ships an update every 2 months, PRISM every 4 days. The most recent releases landed on November 4, 2026 and November 10, 2026 respectively.
| Parameter | Odd Machines | PRISM |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | 4.3 (89 ratings) — better | — |
| Positive reviews | 61.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 89 — better | — |
| Update frequency | Every 2 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Best chart rank | — | #123 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 436 MB | 4 MB |
| Age rating | 9+ | 4+ |
| Developer | XSGames | 에이드리븐 주식회사 |
Customer experience
Odd Machines
PRISM
Bugs and requests
Odd Machines
Reported bugs
9 issues- No stone to collect from 5th window
- Game closes immediately on 'play'
- Bug in first machine, stone disappears
- Cannot zoom on puzzle
- Cannot actuate dials
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- First line of clues/directions hidden by status bar on iPhone
- Hint button not intuitive
- No audio in levels, only main menu
- Bug on top of 4th machine, need to return to temple
Requested features
6 requests- Full game should be free
- Monocle usable at zoomed out level
- More visual feedback for puzzle completion
- Option to get the answer when hint isn't enough
- More levels/unlimited levels
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- Swap back button positions
PRISM
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Odd Machines
- Full Game$3.99
- Unlock Full Game + Coffee$4.99
- Unlock Full Game + Love$7.99
PRISM
No in-app purchases









