Comparison

Phantom P.I. vs Marshmallow Mystery

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

Head to head
About

Phantom P.I.

Explore a haunted mansion filled with mystery and puzzles. Play as a paranormal investigator to help a ghostly rocker find peace by solving clues, hunting sprites, and completing challenging levels. Enjoy hand-animated characters and an original soundtrack in this family-friendly adventure.

Highlights
  • Explore haunted mansion levels
  • Solve diabolical puzzles
  • Hunt for ghoulish ghosts and sprites
  • Collect clues and collectible cards
  • Hand-animated characters
  • Original soundtrack
Features
Read full description

Adventure! In a mansion dripping with mystery and fraught with danger, a poltergeist lurks. Only the Phantom PI can save the day by restoring peace to beloved zombie-ghost rocker Marshall Staxx’s after-life. Play as Cecil or Cecilia, paranormal investigator to the ghostly stars while exploring spooky Ravensmaw Manor. Look for clues, hunt for sprites, and solve diabolical puzzles in this charming puzzle game that’s sure to provide hours of great family-friendly fun. Explore 20 beautifully handcrafted levels while collecting hundreds of objects including clues that reveal the story of Marshall Staxx, unique collectible cards designed by our favourite artists, ghoulish ghosts, spooky sprites and more! Annoying apparitions antagonizing your afterlife? Pesky poltergeists pooping on your peace? Cecil Sparks can help! Phantom PI features charming hand-animated characters, 20 puzzle filled levels to challenge your memory, fill your journal by collecting a gallery of 25+ collectible cards and story clues. And enjoy the haunting original soundtrack and accessible point-and-click controls.

About

Marshmallow Mystery

Read full description

Diese App ist Teil des Theater-Games „Marshmallow Mystery“. Um das Spiel spielen zu können, braucht es neben der App noch eine Landkarte aus Papier, die beim Berliner GRIPS Theater kostenlos bestellt werden kann. Der interaktive Sommercamp-Krimi „Marshmallow Mystery“ wurde am GRIPS Theater gemeinsam mit einer Gruppe von 9- bis 12-jährigen Kindern entwickelt. Er handelt von einem scheinbar idyllischen Ferienlager, in dem sich eine Reihe seltsamer Dinge ereignet: Gegenstände verschwinden, nachts sind merkwürdige Geräusche zu hören und einige Kinder erhalten sich mehr als seltsam. Um herauszufinden, was hier los ist, bekommen die Zuschauer*innen eine Karte des Camps per Post zugesendet, die sich mithilfe von Augmented Reality zum Leben erwecken lässt. Werden die verschiedenen Orte auf der Karte nämlich durch die Kamera eines Smartphones betrachtet, erscheinen an ihrer Stelle die entsprechenden Schauplätze als plastische 3D-Landschaften. Diese können nun erkundet und nach Hinweisen durchsucht werden. Immer wieder sind dort auch Kinder des Zeltlagers anzutreffen, die es zu befragen gilt. So kann das Publikum Schritt für Schritt versuchen, den rätselhaften Fall zu lösen...

Screenshots

Phantom P.I.4 screens
Marshmallow Mystery4 screens

Verdict

The call

The clearest difference is price: Marshmallow Mystery at Free against Phantom P.I.'s $0.99. Marshmallow Mystery also leads on update cadence (every 2 months vs every 8 months). Phantom P.I.'s advantage is iOS requirement (10.0 vs 14.0). On 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

CostPrice · In-app purchases · Ads · Monetization

Marshmallow Mystery is free to download; Phantom P.I. costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Phantom P.I. ships an update every 8 months, Marshmallow Mystery every 2 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

Scorecard3 real differences · 7 level
Phantom P.I. versus Marshmallow Mystery: the parameters behind the verdict, then further details
ParameterPhantom P.I.Marshmallow Mystery
Price$0.99Free — better
Rating3.4 (5 ratings) — better—
Positive reviews67.0% of reviews—
Number of ratings5 — better—
Update frequencyEvery 8 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod, Apple TV — betteriPhone, iPad, iPod
Requires iOS10.0 — better14.0
Further details — not scored
Size386 MB628 MB
Age rating9+4+
DeveloperRocket 5 Studios IncGRIPS Werke e.V.

Bugs and requests

Phantom P.I.

Reported bugs

8 issues
  • Crashes frequently
  • Game won't load or start
  • Cannot pick up items after setting them down
  • Bug preventing progression in later levels (e.g., missing sprites, unlocks)
  • Game exits after intro or loading
Show 3 more
  • Achievements not activating
  • Levels not loading after completion
  • Force stopping/crashing on older devices

Requested features

6 requests
  • More episodes or levels
  • New chapters and updates
  • More variety in gameplay/puzzles
  • Sequel to the game
  • Additional playable characters
Show 1 more
  • Steam release

Marshmallow Mystery

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Phantom P.I.

No in-app purchases

None

Marshmallow Mystery

No in-app purchases

Questions

Is Phantom P.I. free?
Phantom P.I. costs $0.99, with no in-app purchases.
Is Marshmallow Mystery free?
Marshmallow Mystery is free to download, with no in-app purchases.
Do Phantom P.I. or Marshmallow Mystery have ads?
Neither Phantom P.I. nor Marshmallow Mystery shows ads.
Which is updated more often, Phantom P.I. or Marshmallow Mystery?
Phantom P.I. ships an update every 8 months, and Marshmallow Mystery every 2 months. Most recently, Phantom P.I. was updated on October 24, 2026 and Marshmallow Mystery on October 15, 2026.

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