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VR UI Kit: Material Design System
$6.99 via Unity AssetStore

VR UI Kit: Material Design System is a library of common UI components (buttons, tabs, menus, control bars, etc.) for Unity, designed specifically for use in VR applications.

Although it was built for the Oculus and Gear VR, you can make modifications and use it for any platform, including non-VR related apps.

$6.99 via Unity AssetStore
VR Lobbies: Environments, Skyboxes Starter Pack
$4.99 via Unity AssetStore

Get a quick start building your VR app with our VR Lobbies Starter Pack for Unity!

Inside are four beautiful abstract environments, the perfect lobbies for the menus and settings in your VR application.

$4.99 via Unity AssetStore