Click the button below to download the PiGRRL Zero img. You'll need to burn this to an SD card (2 GB minimum) using a image burning tool, like the ones listed in the guide
Once the img has been burnt to a blank SDCard, insert it into the Raspberry Pi Zero. The image is preloaded with tools, emulators, some games and preconfigured buttons for the gamepad controls. It will only work with the PiTFT (So plugging in an HDMI monitor might not display anything).
After first boot, you'll need to expand the filesystem to fill the SD card. This requires having a keyboard attached temporarily (either through a USB hub or a USB-A-to-micro adapter).
From the EmultationStation GUI, press “F4” to exit to a Linux command prompt. Then type “sudo raspi-config”. The very first option in this menu is “Expand Filesystem.” Run that command. Afterward, tab over to the “Finish” button and reboot when prompted.