Fragmented downloads / hidden storage cost
The true storage footprint is concealed until install begins, after the player is already committed.
- Code
- I17
- Category
- Informational / interface
- Severity
- Low
- Evidence
- EmergingIdentified as a 'technical' deceptive design in analysis of Chinese and Japanese free-to-play mobile games.
- Purpose served
- Serves businessPrimarily serves the provider's revenue, retention, or data — the most suspect.
- Mechanism family
- Sneaking / Hiding
- Platforms
- Mobile / F2P
- Player costs
- Autonomy / choiceFinancial
- Modes
- Deceptive
- Target Audience
- developers
- Tags
- storage costhiddendisclosureserves businessdeceptive communicationlow transparencydata pressurecognitive pressure
- Also known as
- hidden storage cost, deferred download, post-install bloat
How it works
The store or install flow advertises a small initial download, but the game pulls down substantial additional data only after installation begins or at first launch — concealing the true storage footprint until the player is already committed.
Why it can be harmful
Players who manage their device storage cannot make an informed choice, and the partial commitment — a started download, an installed shell — discourages backing out. It carries the concealment logic of hidden costs from the interface into the technical install layer, and can also incur unexpected mobile-data charges.
Examples in the wild
- A small advertised download that balloons on first launch
- Required data fetched only after installation starts
- Store size that omits mandatory post-install assets
Illustrative genre examples to aid recognition — not allegations about specific titles.
References
- Zhang, G. X. (2025). First contact with dark patterns and deceptive designs in Chinese and Japanese free-to-play mobile games. Proceedings of the ACM on Human-Computer Interaction (CHI PLAY). doi.org/10.1145/3748620 · citing patterns
Related patterns
Personalised spend-optimisation
Silently using a player's behavioural data to tune offers, prices, odds, difficulty, or matchmaking to maximise that individual's spending.
Bad defaults / preselection
The provider-preferred option is already selected or treated as the normal path, so inaction becomes consent, spending, or data sharing.
Language inaccessibility / complex copy
Important purchase, privacy, odds, or consent information is presented in language the player cannot reasonably understand.
Trick wording / misleading copy
Confusing, ambiguous, or expectation-violating wording makes the player take an action they did not mean to take.
Hidden / undisclosed odds
The probability of outcomes in a paid randomised reward is withheld, buried, or hard to verify.
Accidental-purchase / default-to-purchase UI
Purchase is the default or easily mis-tapped path, so spending happens without express, informed consent.