See the following for links to sources of ROMs. More Games and ROMs for playing on RetroPie and the Picade These games are not really complete games for you to play, but more a starting point which you could develop into a more comprehensive game. Space Asteroids - although not designed for the Picade with a few changes this would also work.Memory game (works best with a mouse attached).Feed the Unicorn (learn about programming Pygame Zero).Games from the book Beginning Games programming with Pygame Zero.If you are interested in creating your own games, then this is explained in my book Beginning Game Programming with Pygame Zero or the following links on my website: Creating Your Own Games Using Python Pygame and Pygame Zero
The above includes a video explaining the whole process as well as an image of the keyboard / joystick layout and all the relevant links needed for setting up your Raspberry Pi. Finally, select your device in the list and follow the previous instruction to configure keys.
This is explained in my page How to add your own games to RetroPie on the Raspberry Pi Picade. First, you need to set up your Retropie with a wired controller (use your keyboard if you have only a Bluetooth controller) Then go to the configuration menu and choose Bluetooth > Register and Connect to Bluetooth Device.
The first thing is to setup and install RetroPie on the Picade, and then to add the appropriate themes and games to RetroPie. Installing RetroPie on the Picade and Adding Games to RetroPie Typically, the collection is similar to those of other retro gaming consoles, but there are some critical differences between this ROMset and those of different consoles.
This is to show you some of the original games I have made and how you can create your own games for RetroPie. Retropie ROMset or ROMs Pack is a modern collection of MAME & other ROMs of various arcade games that were played decades ago. There can be copyright issues with these, but some links to legal ROMs are included towards the bottom of this page. Many of the games available for RetroPie are original ROMs based around original games. It is often used with RetroPie which provides emulation software and a front end to playing games. The Picade is a desktop Arcade machine based around a Raspberry Pi. Games for playing using RetroPie on the Picade