More info here:It is now possible to export your LSS3D files out from the latest version of LSS v10 to the Unity Engine with our new LSS Unity Plugin
The Plugin is absolutely free. To get your copy you will need to add it to your shopping cart and complete the checkout process. You will then receive, within an hour, an email with a link to download the plugin. If you don’t receive the email, please check your spam box. If it’s still not there then please contact [email protected] with details of your order.
https://www.dtmsoftware.com/our_products/Unity-Plugin