A SEGA Classics FAQ announces that select classic SEGA games and bundles are being delisted from digital storefronts on December 6th (thanks VGC). The affected games will remain in the libraries of existing owners and will continue to be playable, but will no longer be available for new purchases. The post also includes delistings for Xbox, Switch, and PlayStation, but the list of games departing from Steam breaks things down by title, so it is huge compared to the others:

Titles to be delisted on Steam

• Alex Kidd in the Enchanted Castle
• Alien Soldier
• Alien Storm
• Altered Beast
• Beyond Oasis
• Bio-Hazard Battle
• Bonanza Bros
• Columns
• Columns III
• Comix Zone
• Crack Down
• Crazy Taxi
• Decap Attack
• Dr. Robotnik’s Mean Bean Machine
• Dreamcast Collection Bundle
• Dynamite Headdy

♪♫ Intermission ♫♪

• Ecco Jr.
• Ecco the Dolphin
• Ecco: The Tides of Time
• ESWAT: City Under Siege
• Eternal Champions
• Fatal Labyrinth
• Flicky
• Galaxy Force II
• Gain Ground
• Golden Axe
• Golden Axe II
• Golden Axe III
• Gunstar Heroes
• Jet Set Radio
• Kid Chameleon
• Landstalker: The Treasures of King Nole
• Light Crusader
• Mega Drive and Genesis Classic Bundle
• NiGHTS into Dreams
• Phantasy Star II
• Phantasy Star III: Generations of Doom
• Phantasy Star IV: The End of the Millennium
• Ristar
• SEGA Bass Fishing
• Shadow Dancer
• Shining Force
• Shining Force II
• Shining in the Darkness
• Shinobi III: Return of the Ninja Master
• Sonic 3D Blast
• Sonic Spinball
• Space Channel 5: Part 2
• Space Harrier II
• Streets of Rage
• Streets of Rage 2
• Streets of Rage 3
• Super Thunder Blade
• Sword of Vermilion
• The Revenge of Shinobi
• ToeJam & Earl
• ToeJam & Earl in Panic on Funkoton
• VectorMan
• VectorMan 2
• Virtua Fighter 2
• Wonder Boy in Monster World
• Wonder Boy III: Monster Lair