Comparison

Odd Machines vs PRISM

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Solve unique puzzle boxes
  • Explore an ancient temple
  • Collect fragments of a lost stone
  • Immersive audio experience
  • Multi-language support
Features
Read full description

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

About

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.

Highlights
  • Light beam manipulation
  • Color matching puzzles
  • 6 chapters with 240 levels
  • Real optics principles
  • No ads or in-app purchases
  • Offline play
Currently charting
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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

Odd Machines4 screens
PRISM4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

UpkeepUpdate frequency

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.

Scorecard6 real differences · 5 level
Odd Machines versus PRISM: the parameters behind the verdict, then further details
ParameterOdd MachinesPRISM
PriceFree — better$1.99
Rating4.3 (89 ratings) — better—
Positive reviews61.1% of reviews100.0% of reviews — better
Number of ratings89 — better—
Update frequencyEvery 2 monthsEvery 4 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank—#123 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size436 MB4 MB
Age rating9+4+
DeveloperXSGames에이드리븐 주식회사

Customer experience

Odd Machines

All ratings85 ratings
Positive85.9%
Neutral3.5%
Negative10.6%
Written reviews36 reviews
Positive61.1%
Neutral8.3%
Negative30.6%

PRISM

Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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
Show 4 more
  • 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
Show 1 more
  • Swap back button positions

PRISM

Not enough reviews yet to summarise bugs or requests.

In-app purchases

3 purchases

Odd Machines

One-time3
  • Full Game$3.99
  • Unlock Full Game + Coffee$4.99
  • Unlock Full Game + Love$7.99
None

PRISM

No in-app purchases

Questions

Is Odd Machines free?
Odd Machines is free to download, with in-app purchases available.
Is PRISM free?
PRISM costs $1.99, with no in-app purchases.
Do Odd Machines or PRISM have ads?
Neither Odd Machines nor PRISM shows ads.
Which is updated more often, Odd Machines or PRISM?
Odd Machines ships an update every 2 months, and PRISM every 4 days. Most recently, Odd Machines was updated on November 4, 2026 and PRISM on November 10, 2026.

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