How to show 2D window & buttons on PlayCanvas?

We have troubles with show 2D UI. How to show 2D window and buttons?

There is a 2D system in the pipeline and currently in closed beta while they ensure that it is ready for everyone to use.

In the meantime, you can either use:

For 2d windows and buttons you can use also raphael.min

thank you, I will try to use it.

thank you, we try to use it