# Platformer extension demo
**URL:** https://forum.makecode.com/t/platformer-extension-demo/714
**Category:** Arcade
**Tags:** extension
**Created:** [October 29, 2019, 5:47pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714 "2019-10-29T17:47:17Z")
**Posts on this page:** 11
**Page:** 1
### Author:  [@richard](https://forum.makecode.com/u/richard)
#### Post date: [October 29, 2019, 5:47pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/1 "2019-10-29T17:47:18Z")
Hey folks,
I’ve been working on a package for making platformers in arcade and it is now far enough along that I thought I’d post a demo!
> **[platformer-package-demo](https://arcade.makecode.com/74323-03159-97198-90872)**
>
> Made with ❤️ in Microsoft MakeCode Arcade.
The main features include:
1. A whole new physics engine
2. Support for sloped surfaces in tilemaps
3. Moving platforms
The actual extension can be found here: [https://github.com/riknoll/pxt-platformer](https://github.com/riknoll/pxt-platformer)
If anyone is interested in using it, I can post a guide on how I made the tilemaps. For now, it’s JavaScript only. I’m hoping in the future to make building levels easier and to add block APIs.
---
### Author:  [@GameGod](https://forum.makecode.com/u/GameGod)
#### Post date: [July 4, 2020, 8:20pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/2 "2020-07-04T20:20:53Z")
> [@richard](#):
>
> If anyone is interested in using it, I can post a guide on how I made the tilemaps.
Can you do this?
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### Author:  [@2ndClemens](https://forum.makecode.com/u/2ndClemens)
#### Post date: [July 5, 2020, 11:15pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/3 "2020-07-05T23:15:25Z")
Hi, I can’t open the demo.
Clicking the link leads to this error:
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### Author:  [@GameGod](https://forum.makecode.com/u/GameGod)
#### Post date: [July 5, 2020, 11:30pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/4 "2020-07-05T23:30:25Z")
> [@richard](#):
>
> [https://github.com/riknoll/pxt-platformer](https://github.com/riknoll/pxt-platformer)
what link, [2ndClemens](https://forum.makecode.com/u/2ndClemens), this one? ⬆
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### Author:  [@2ndClemens](https://forum.makecode.com/u/2ndClemens)
#### Post date: [July 5, 2020, 11:46pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/5 "2020-07-05T23:46:51Z")
No, this one (from the first post)
> **[platformer-package-demo](https://arcade.makecode.com/74323-03159-97198-90872)**
>
> Made with ❤️ in Microsoft MakeCode Arcade.
---
### Author:  [@GameGod](https://forum.makecode.com/u/GameGod)
#### Post date: [July 5, 2020, 11:47pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/6 "2020-07-05T23:47:58Z")
oh…
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### Author:  [@GameGod](https://forum.makecode.com/u/GameGod)
#### Post date: [July 5, 2020, 11:48pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/7 "2020-07-05T23:48:10Z")
I can’t access it either.
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### Author:  [@2ndClemens](https://forum.makecode.com/u/2ndClemens)
#### Post date: [July 5, 2020, 11:53pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/8 "2020-07-05T23:53:36Z")
And this doesn’t work either, even in the beta editor:
This repository contains a MakeCode extension. To use it in MakeCode,
- open [https://arcade.makecode.com/](https://arcade.makecode.com/)
- click on **New Project**
- click on **Extensions** under the gearwheel menu
- search for the URL of this repository
So I wonder how to open the demo.
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### Author:  [@cosmoscowboy](https://forum.makecode.com/u/cosmoscowboy)
#### Post date: [January 2, 2021, 3:52pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/9 "2021-01-02T15:52:29Z")
@richard
I found the ‘slope demo’ you were referring to in [A tournament - Arcade - Microsoft MakeCode](https://forum.makecode.com/t/a-tournament/4978/41)
Unfortunately after importing the GitHub url of ( [GitHub - riknoll/pxt-platformer: A Microsoft MakeCode Arcade extension for platformers](https://github.com/riknoll/pxt-platformer)), I receive the following errors:
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### Author:  [@NxNMatrixGL](https://forum.makecode.com/u/NxNMatrixGL)
#### Post date: [January 3, 2021, 12:33am UTC](https://forum.makecode.com/t/platformer-extension-demo/714/10 "2021-01-03T00:33:40Z")
This may be due to use of legacy code. Try to import the Color-coded Tilemap extension.
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### Author:  [@cosmoscowboy](https://forum.makecode.com/u/cosmoscowboy)
#### Post date: [January 3, 2021, 5:36pm UTC](https://forum.makecode.com/t/platformer-extension-demo/714/11 "2021-01-03T17:36:53Z")
I think you are right, as the color code tilemap allowed you to change the size of the tile; in this case 8x8 instead of 16x16.