Is Sonic & Knuckles on Steam?

No. Sonic & Knuckles 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 Sonic & Knuckles on?

Sonic & Knuckles is available on Wii, Sega Mega Drive/Genesis, Xbox 360.

When did Sonic & Knuckles release?

Sonic & Knuckles was first released on October 18, 1994.

Sonic & Knuckles

Oct 18, 1994PlatformWii Sega Mega Drive/Genesis Xbox 360

Sonic & Knuckles — frequently asked questions

Is Sonic & Knuckles on Steam?: No. Sonic & Knuckles 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 Sonic & Knuckles on?: Sonic & Knuckles is available on Wii, Sega Mega Drive/Genesis, Xbox 360.
When did Sonic & Knuckles release?: Sonic & Knuckles was first released on October 18, 1994.

About Sonic & Knuckles

Sonic & Knuckles is a side-scrolling platform game that continues the events of Sonic the Hedgehog 3. Sonic seeks to prevent Dr. Robotnik from repairing the Death Egg and obtaining the Master Emerald, while Knuckles attempts to protect Floating Island. Players can control either character through a series of zones, collecting rings and Chaos Emeralds while defeating enemies and bosses. Knuckles can glide, climb walls, and break certain obstacles, while Sonic can use abilities granted by elemental shields.

Summary via IGDB.

Sonic & Knuckles on Wikipedia

Sonic & Knuckles is a 1994 platform game developed by Sega Technical Institute and published by Sega for the Sega Genesis. Players control Sonic the Hedgehog or Knuckles the Echidna in their quests to save Angel Island; Sonic tries to stop Doctor Robotnik from re-launching his orbital weapon, the Death Egg, while Knuckles scuffles with Robotnik's minion, EggRobo. Like previous Sonic games, players traverse side-scrolling levels at high speeds while collecting rings and defeating enemies.

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