Here's a way to create your own Tiny Video Game console using the TinyDuino. This uses the main TinyDuino processor board (basically a mini version of the Arduino Uno), a Joystick board (which has two analog joysticks and two shoulder buttons), and the TinyScreen, a very small OLED display. Several games examples are currently given, like a Flappy Bird clone, simple Mario clone, Asteroids, Space Invaders, and many more are being developed.
To charge your battery, attach your USB TinyShield to your processor board and plug in your micro USB cable. An amber light will turn on to indicate the battery is charging. When charging is complete, the light will turn off.