The Odroid-Go is a DIY device which boasts the functionality to play Nintendo Entertainment System (NES), GameBoy, GameBoy Color, Sega Master System, and Sega Game Gear titles. It looks similar to the GameBoy Color, but comes unassembled. While assembly is required, it's incredibly simple to configure. Aside from gaming, the Odroid Go handheld gaming console sports Arduino compatibility for basic programming practice. The Odroid-Go kid features everything you'll need to get started from a hardware perspective. You'll need an 8GB or larger microSD card, software available from the Odroid website, and your own ROMs (note: Electromaker does not condone piracy, so please only use ROMs for games you legally own). The Odroid-Go arrives as a 10th anniversary celebration for Hardkernel which released an portable Android retro gaming console as one of its first devices. 

What's in the box?:

• Odroid-Go main board
• Console enclosure
• 2.4-inch LCD module
• One 4x button rubber piece
• Two 2x button rubber pieces
• One 2x button rubber piece 
• 10-pin male header
• 8Ohm 0.5W speaker
• LCD window
• Button set (A, B, D-pad)
• micro USB cable
• 1200mAh Li-ion battery

Game console support:

• GameBoy
• GameBoy Color 
• NES
• Sega Master System
• Game Gear

What you'll need:

• Odroid-Go kit
• Small philips head screwdriver 
• microSD card
• Odroid-Go software 

• (Legal) ROMs

Specifications:

While the Odroid XU4 remains a top Raspberry Pi alternative because of its octa-core processing power, the Odroid-Go is admittedly underpowered. At its core, you'll find an ESP32-WROVER with 16MB flash memory. While the ESP32 won't compete with even a Raspberry Pi Zero, it's more than adequate for older gaming emulators. Its CPU operates from 80MHz-240MHz.