Retropie 4.7.1 Official. Setup tutorial Part 3. Installing Themes 720 resolution image download. Raspberry Pi 4 / 400.
See 12.20 for adding themes
Download link for image on Google Drive around 12GB
#warning overclocked to 2147# make sure you have adequate cooling
No roms are included
There are several playable games in ports that were installed by Retropie packages
You will need to expand the partition with gparted link below
All Packages added. Optional, Main & experimental. Updated everything updateable. installed Pixel desktop. Resolution set to 720 for improved performance. PiKiss and PiApps installed. Fundamental and MagazineMadness Themes added.
GParted link to expand the partition
image shrunk and created with this video
Works with Pi 4, Pi 400 and more also supports USB boot
I was using a Pi 4.