You can install this directly from the Epic Game Launcher.
<aside>
⚠️ If you adding this to a project which contains OpenLand, close the Unreal Editor for that project, before adding OpenLand Grass.
*(Both projects share some common files & that's the reason for this)*
</aside>
For Unreal Engine 5 projects, we cannot distribute them via the marketplace yet. So, for UE5 projects follow these steps.
The Easiest way to get started with OpenLand Grass is to launch the demo map & start playing around with the grass system. So, open the map located at:
Content/OpenLand/Maps/ExampleOpenLandGrassMap
It will load you with a scene like this.
Hit ALT + P
and move here and there.