Is Mario Bros. on Steam?

No. Mario Bros. is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. Its live popularity is tracked here via Twitch viewership instead.

What platforms is Mario Bros. on?

Mario Bros. is available on Arcade.

When did Mario Bros. release?

Mario Bros. was first released on July 14, 1983.

Mario Bros.

Jul 14, 1983PlatformArcadeArcade

Twitch directory

Mario Bros.player count & live stats

Mario Bros. is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. The closest public, real-time popularity signal is Twitch viewership — see the live streams and 7-day viewer trend below.

Platforms: Arcade
First released: Jul 14, 1983

Mario Bros. live stats

1 7-day peak viewers

5,840 30-day peak viewers

5,840 12-month peak viewers

Live stats last updated 20 minutes ago.

Mario Bros. — frequently asked questions

Is Mario Bros. on Steam?: No. Mario Bros. is not distributed on Steam, so there is no Steam Charts or SteamDB player count for it. Its live popularity is tracked here via Twitch viewership instead.
What platforms is Mario Bros. on?: Mario Bros. is available on Arcade.
When did Mario Bros. release?: Mario Bros. was first released on July 14, 1983.

About Mario Bros.

Mario Bros. is an arcade game published by Nintendo and developed by Shigeru Miyamoto. The platform puzzle which first introduced Luigi to the world has both single and multiplayer action with two differing game types, but with the same objective. Crabs, turtles and fighter flies must be cleared out by jumping underneath the platform they sit on, then kicking them away. Each level is cleared when a set number of coins is collected. For the two player mode, the first to collect the set amount of coins wins.

Summary via IGDB.

Mario Bros. on Wikipedia

Mario Bros. is a 1983 platform game developed and published by Nintendo for arcades. It was designed by Shigeru Miyamoto and Gunpei Yokoi, Nintendo's chief engineer. Players control Italian twin brother plumbers Mario and Luigi as they exterminate turtle-like creatures, giant flies, and crabs emerging from the sewers of New York City by knocking them upside-down and kicking them away. The Famicom/NES version was the first game to be developed by Intelligent Systems. It is part of the Mario franchise and the first spin-off of the Donkey Kong series.

Source: Wikipedia (text under CC BY-SA 4.0).