---
key: mechanic/engagement-retention--family-18
type: mechanic
id: engagement-retention--family-18
lang: en
title: Selling relief from constraints and advantages
summary: >-
  Paid access removes a limitation or provides an advantage. Evaluation depends
  on transparent terms and voluntary spending.
updatedAt: '2026-10-22'
status: active
url: >-
  https://gamemechanics.pro/en/knowledge/mechanic/engagement-retention--family-18/
jsonUrl: >-
  https://gamemechanics.pro/api/v1/knowledge/en/mechanic/engagement-retention--family-18.json
markdownUrl: >-
  https://gamemechanics.pro/content/knowledge/en/mechanic/engagement-retention--family-18.md
aliases:
  - Selling relief from limitations
tags:
  - 'Engagement, retention and addictive patterns'
  - Mechanics catalog
sourceIds:
  - source-38db45754d75dfcb
sources:
  - id: source-38db45754d75dfcb
    title: Duolingo
    url: 'https://www.duolingo.com/super'
    verifiedAt: null
relations: []
placements:
  - catalogId: engagement-retention
    id: family-18
    title: 'Engagement, retention and addictive patterns'
    url: 'https://gamemechanics.pro/en/mechanics/engagement-retention/#family-18'
    categoryIds:
      - section-1
supersededBy: []
attributes:
  preview:
    updatedAt: '2026-10-22'
    title: Selling relief from limitations
    description: >-
      Paid access removes a limitation or provides an advantage. Evaluation
      depends on transparent terms and voluntary spending.
    image:
      src: images/mechanics/learning-duolingo-super-comparison.webp
      width: 1280
      height: 720
      crop:
        x: 175
        'y': 375
        width: 930
        height: 345
      game: Duolingo
      sourceUrl: 'https://www.duolingo.com/super'
      originalUrl: 'https://www.duolingo.com/super'
      credit: 'Duolingo; public website capture, 2026-10-22'
      rights: >-
        © Duolingo. Signed-out public subscription page captured without
        starting a trial or signing in, 2026-10-22. All rights reserved;
        excluded from MIT and CC BY 4.0.
      caption: 'Duolingo: public comparison of free access and Super limitations'
      alt: 'Duolingo: public comparison of free access and Super limitations'
      markers:
        - x: 48
          'y': 79
          label: Unlimited hearts are listed as a Super benefit
    tips:
      - Show available free actions and complete terms for the paid option.
    examples:
      - title: Duolingo
        url: 'https://www.duolingo.com/super'
endsAt: null
provenance: >-
  Original editorial design catalog consolidated from project discussions on
  2026-10-20. Complete discussion item lists and contextual limitations are
  preserved; linked primary sources support specific techniques, not the entire
  classification. English translation was prepared with machine assistance and
  editorial review.
license: CC-BY-4.0
codeLicense: MIT
attribution: gamemechanics.pro contributors
catalogKey: catalog/engagement-retention
---
# Selling relief from constraints and advantages

id: engagement-retention--family-18
type: mechanic
key: mechanic/engagement-retention--family-18
lang: en
status: active
url: https://gamemechanics.pro/en/knowledge/mechanic/engagement-retention--family-18/

Paid access removes a limitation or provides an advantage. Evaluation depends on transparent terms and voluntary spending.

## At a glance

![Duolingo: public comparison of free access and Super limitations](https://gamemechanics.pro/images/mechanics/learning-duolingo-super-comparison.webp)

[Duolingo](https://www.duolingo.com/super) · © Duolingo. Signed-out public subscription page captured without starting a trial or signing in, 2026-10-22. All rights reserved; excluded from MIT and CC BY 4.0.

1. Unlimited hearts are listed as a Super benefit

- Show available free actions and complete terms for the paid option.

- [Duolingo](https://www.duolingo.com/super)

## How it works

Selling the removal of restrictions or benefits ties the player's inconvenience and power to costs; value transparency and voluntariness.

## Variants

### Variants and applications

<a id="family-18-variants"></a>

- Purchasing energy and attempts: payment allows you to continue beyond the set limit <a id="variant-engagement-retention-18-01"></a>
- Paid continuation after defeat: you can save the current run or result <a id="variant-engagement-retention-18-02"></a>
- Acceleration of timers: waiting is removed by payment <a id="variant-engagement-retention-18-03"></a>
- Paid grind pass: money replaces long repetition of actions <a id="variant-engagement-retention-18-04"></a>
- Selling the elimination of inconveniences: cramped inventory, slow collection and other restrictions are removed by purchase <a id="variant-engagement-retention-18-05"></a>
- Buying a competitive advantage, pay-to-win: spending becomes a way to stay competitive <a id="variant-engagement-retention-18-06"></a>
- Regular obsolescence of paid power: new stronger objects create the need to gain advantage again <a id="variant-engagement-retention-18-07"></a>
- Paid loss protection: purchase saves series, property, rating or result <a id="variant-engagement-retention-18-08"></a>

## Context and limits

A map of 160 techniques for analyzing interest, returns, costs and pressure on the player. Involvement in itself does not mean dependence; the presence of separate mechanics does not determine the diagnosis or prove causation. This is the author's classification for critical analysis of design, and not a scientifically established list of the causes of gaming disorder. Assess context, audience, voluntariness of participation, and opportunity to stop.

## Connected materials


## Sources and provenance

Original editorial design catalog consolidated from project discussions on 2026-10-20. Complete discussion item lists and contextual limitations are preserved; linked primary sources support specific techniques, not the entire classification. English translation was prepared with machine assistance and editorial review.

- [Duolingo](https://www.duolingo.com/super) (id: source-38db45754d75dfcb)

CC-BY-4.0 · gamemechanics.pro contributors