Emulator: Stella 5.0.2 (20.08.2017)
Hardware: 1977 - 1989
Wiki: https://en.wikipedia.org/wiki/Atari_2600
Manual: https://stella-emu.github.io/docs/index.html

Hotkeys:
Escape = Menu/Configuration
Control + Q = Quit
F1 = Select Game
F2 = Reset Game
F9 = Save State
F11 = Load State

Controls:
Up, Down, Left, Right and Space to Shoot.
USB Joystick is used if detected.