Is Mario Kart 64 on Steam?

No. Mario Kart 64 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 Kart 64 on?

Mario Kart 64 is available on Wii, Nintendo 64, Wii U.

When did Mario Kart 64 release?

Mario Kart 64 released on December 14, 1996.

Mario Kart 64

Dec 14, 1996RacingArcadeWii Nintendo 64 Wii U

Mario Kart 64 — frequently asked questions

Is Mario Kart 64 on Steam?: No. Mario Kart 64 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 Kart 64 on?: Mario Kart 64 is available on Wii, Nintendo 64, Wii U.
When did Mario Kart 64 release?: Mario Kart 64 released on December 14, 1996.

About Mario Kart 64

Mario Kart 64 is the second main installment of the Mario Kart series. It is the first game in the series to use three-dimensional graphics, however, the characters and items in this game are still two-dimensional, pre-rendered sprites. The game offers two camera angles and three engine sizes: 50cc, 100cc and 150cc. Each kart has distinctive handling, acceleration and top speed capabilities. Shells that you fire at rival racers, Bananas that make them skid out and Lightning Bolts that make them small and very slow are just a few of the game's unique power-ups.

Summary via IGDB.

Mario Kart 64 on Wikipedia

Mario Kart 64 is a 1996 kart racing game for the Nintendo 64 (N64). Developed and published by Nintendo, it is the second installment in the Mario Kart series after 1992's Super Mario Kart. The game retains the gameplay of its predecessor: the player, controlling a Mario franchise character, races opponents around tracks based on locales from the Super Mario platform games. Tracks contain obstacles to slow the player down and item boxes which give the player power-ups to aid in their progress. Mario Kart 64 contains different single-player and local multiplayer game modes, including a Grand Prix racing mode and a last man standing battle mode.

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