You can increase the storage space for apps and games on your SHIELD TV by setting up a USB drive to replace the existing internal storage. Games can be saved directly to your USB drive.
What you need to know before increasing your storage with a USB drive::
When you format a USB drive as internal storage, it becomes encrypted to your SHIELD TV and can no longer be used interchangeably with other devices such as personal computers or cameras. Alternatively, you can set up your USB drive as removable storage for sharing files. However, you cannot install apps and games to removable storage. You can no longer use this USB drive to share content between SHIELD TV and your PC without formatting.
When you format a USB drive as internal storage, it effectively replaces your current internal storage. You will no longer be able to use storage space on your existing internal storage for installing large game files. Make sure the new storage space is larger than your current internal storage (16GB).
NVIDIA recommends the following drives to maximize storage space and performance:
SanDisk Extreme CZ80 64GB USB 3.0 Flash Drive (SDCZ80-064G-GAM46)
SanDisk Ultra USB flash drive, 128GB, Black (SDCZ48-128G-A46)
Corsair Flash Voyager Slider X1 128GB USB 3.0 Flash Drive
NOTE To free up your USB PC connection port, use the other USB 3.0 port for storage purposes.