Hello,
I've got to admit that I have never heard of an issue like this. So it could be the SD Card mixing up some things, the file transfer got mixed up, or the menu is acting up for some reason.
Here are some suggestions you can try in order:
1. Use the troubleshooting section of the Uploading Games to SD Card section to re-format the SD card you are using (this will clear anything on the SD card, so make sure anything you need is removed)
2. Get a fresh download of all of the Arcade games from our site, and copy these onto the formatted SD Card
Try testing the unit now for any lockup issues, if still getting lockups:
3. Reload the Tiny Arcade menu using the Arduino IDE:
https://learn.tinycircuits.com/Help/Tiny-Arcade-DIY-Kit_Menu-Update/I hope that helps! Let me know if you are still having any problems!
Thanks,
RĂ©na