Welcome to the Retroid community! Here are some useful links.

Here are some links to help you get set up with your Retroid device.

Retroid's Website
Delivery Dashboard

Community-driven game compatibility sheets (Google Sheets):

RP3+/Flip
RP2S
RP2+/3

Setup:

Retro Game Corps - RETROID POCKET 2+/3/3+/FLIP STARTER GUIDE

Youtube Guides:
TechDweeb
Mjonir Stone: RP3+ optimization playlist - Includes lots of useful guides on how to set up individual systems for good performance.
RoeTaKa: RP3+ optimization playlist
Feel free to comment if anything else should be added.