---
title: "Challenge: Build that Object List"
content_type: tutorial
url: "https://learn.unity.com/tutorial/challenge-build-that-object-list?language=en"
language: en
difficulty: beginner
duration_minutes: 30
unity_version:
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last_updated: "2026-08-04T14:21:52.000Z"
---

# Challenge: Build that Object List

Create a system that spawns random GameObjects at random positions and tracks them in a dynamic list.

In this challenge, you will spawn random GameObjects in random positions. You will store these GameObjects in a dynamic list as they are created.

## 1. Challenge: Build that Object List

[Video](https://connect-mediagw.unity.com/h1/20190530/videos/862b14c2-90ad-4a3a-b3b4-0110b5d70e8b_03_Challenge_Build_That_Object_List.mp4) ([Transcript (en)](https://connect-mediagw.unity.com/h1/20200304/f174fac9-e02d-4c9d-a8a8-3086cd53bfde_03_Challenge_Build_That_Object_List.vtt))

## 2. Challenge Review: Build that Object List

[Video](https://connect-mediagw.unity.com/h1/20190530/videos/09185a3d-b254-4109-aaa7-720b9637eada_04_Challenge_Review_Build_That_Object_List.mp4) ([Transcript (en)](https://connect-mediagw.unity.com/h1/20200304/af3c9ca0-ffba-40e3-b923-b4e2c3ebece4_04_Challenge_Review_Build_That_Object_List.vtt))