> ## Documentation Index
> Fetch the complete documentation index at: https://docs.nudj.cx/llms.txt
> Use this file to discover all available pages before exploring further.

# Action Types Overview

> Canonical taxonomy of every challenge action — pick the right type for the job

Every challenge is a sequence of **actions**. Nudj groups action types into four families — Question, Social Media, Platform, and Rich Media — each with its own dedicated page.

## Pick the right type

| Action                | Family     | When to use                                       |
| --------------------- | ---------- | ------------------------------------------------- |
| Multiple choice       | Question   | Multi-select answers, quizzes, preference polling |
| Single choice         | Question   | One-pick answers, quick opinions                  |
| Secret code           | Question   | In-store redemption, event unlocks                |
| Free text             | Question   | Open feedback, UGC captions                       |
| Rating / NPS          | Question   | Satisfaction measurement                          |
| Select value in range | Question   | Slider-based quantitative input                   |
| Select from list      | Question   | Long-list picks (city, SKU)                       |
| Share link            | Social     | Ask members to share a URL                        |
| Follow                | Social     | External platform follow CTA                      |
| YouTube watch         | Social     | Embedded YouTube video consumption                |
| YouTube subscribe     | Social     | Subscribe to your channel                         |
| Image upload          | Rich Media | UGC, moderation-gated submissions                 |
| Video action          | Rich Media | Timestamp-based video interactions                |
| Object detection      | Rich Media | AI-verified photo submissions                     |
| Check-in              | Platform   | Attendance, daily habits                          |
| Streak                | Platform   | Consecutive-day rewards                           |
| Game                  | Platform   | Launch a Nudj mini-game                           |
| Complete Achievement  | Platform   | Gate a challenge behind another                   |

***

## Where each lives

<CardGroup cols={2}>
  <Card title="Question Actions" icon="clipboard-question" href="/admin-guide/challenges/question-actions">
    Multiple / single choice, quiz mode, secret codes, free text, rating, NPS, select-from-list, select-value-in-range.
  </Card>

  <Card title="Social Media Actions" icon="share-nodes" href="/admin-guide/challenges/social-media-actions">
    Share, follow, YouTube watch, YouTube subscribe.
  </Card>

  <Card title="Platform Actions" icon="gamepad" href="/admin-guide/challenges/platform-actions">
    Complete-achievement, check-in, streak, game.
  </Card>

  <Card title="Rich Media Actions" icon="image" href="/admin-guide/challenges/rich-media-actions">
    Image upload, video action, object detection.
  </Card>
</CardGroup>

***

## Shared action features

All action types share:

* **Rich text descriptions** (#672) — headings, lists, links, inline images.
* **Banner image upload** above the question/prompt.
* **Optional per-action reward distribution** (#1202) — hand out points/XP/assets at action-level in addition to challenge-level.
* **Language support** — translate each action's strings.
* **Reordering** via drag-and-drop in the challenge editor.

***

## Common patterns

<AccordionGroup>
  <Accordion title="Quiz" icon="graduation-cap">
    5-10 multiple-choice actions with **quiz mode on**. Reward on high accuracy via a Complete-Achievement gate.
  </Accordion>

  <Accordion title="Survey" icon="poll-people">
    Mix of free-text, rating, and single-choice. Export CSV post-event for analysis.
  </Accordion>

  <Accordion title="Scavenger hunt" icon="map-location-dot">
    Multiple single-use secret-code actions placed around a venue.
  </Accordion>

  <Accordion title="Video course" icon="film">
    Sequence of video actions with quiz questions between them; use a Complete-Achievement action to lock later modules.
  </Accordion>

  <Accordion title="UGC campaign" icon="camera">
    One image-upload action with strict aspect ratio + moderation queue.
  </Accordion>
</AccordionGroup>