In the past few years, we have covered plenty of tiny game consoles here. The Thumby is also worth a look. It is a thumb-sized game system with a OLED display, 4-way D-pad and 2 gameplay buttons. It also has a built-in rechargeable battery and buzzer.
The Thumby can be connected to another unit for multi-player gaming. It is powered by a Raspberry Pi RP2040 Processor with 2MP storage space. It supports MicroPython or Arduino IDE programming. Like what you see? You can find this project on Kickstarter at this time.