Activision Blizzard is a video game holding company that owns and operates several subsidiary studios, including Activision Publishing, Blizzard Entertainment, King, Major League Gaming, and Activision Blizzard Studios. The company owns a large number of prominent game franchises, including:

• Call of Duty
• Crash Bandicoot
• Diablo
• Overwatch
• World of Warcraft
• Spyro the Dragon
• StarCraft
• Hearthstone
• Heroes of the Storm
• Candy Crush Saga
• Skylanders
• Tony Hawks Pro Skater
• Guitar Hero
• Prototype
• Singularity
• SWAT
• Pitfall
• Quest for Glory
• The Lost Vikings
• Space Quest
• Soldier of Fortune
• Phantasmagoria
• Ski Resort Tycoon
• Gabriel Knight
• Empire Earth
• Geometry Wars
• Gun
• Laura Bow Mysteries
• Tenchu
• TimeShift
• True Crime
• Zork

Its worth noting that some of these franchises have been pared down to just a few big hits, while others are classic games and characters that are just sitting there, still owned by Activision, now able to be resurfaced by Microsoft who is now the one that owns all those IPs since the deal has closed.