You get an Atari VCS/Atari 2600, and a cart. You might need a VCR to convert the RF out from the Atari, to composite for streaming and recording.

Though there are AV-modded Ataris out there.

I have no idea if the emulators are valid.

The leaderboard has runs with [EMU] in the console name, so I believe emulators are valid.

Has it been tested?