> For the complete documentation index, see [llms.txt](https://xreal.gitbook.io/nrsdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xreal.gitbook.io/nrsdk/development/plane-detection-tutorial/overview.md).
# Overview
### What you'll build
In this codelab, you'll build a simple game using NRSDK. The goal of the game is to collect gem using a vehicle that you control using your controller.
However, this won't happen in an entirely virtual world! You'll mix physical atoms and digital bits to create a new type of player experience by creating a game that understands the environment around the player.
By the end of this tutorial, your game will be able to:
* Detect real-world planes and draw a playing field over it.
* Cast rays from controller and detect intersections with planes.
### What you'll learn
* How to set up a project that uses NRSDK
* How to use `PlaneDetector`to subscribe to new planes.
* How to use `Raycast` to find intersections with virtual geometry
### What you'll need
Please refer to Step 1 to Step 5 in [Getting Started with NRSDK](/nrsdk/nrsdk-fundamentals/quickstart-for-android.md) to get your environment ready for development.
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