World of Warcraft, originally released in November 2004, has a 30% chance of releasing on Steam due to its complex subscription model and integration with Blizzard's Battle.net. The Ultima series, first released in 1981, has a 60% chance of appearing on Steam as EA is reintroducing classic titles on the platform. MiHoYo's games Genshin Impact, Honkai: Star Rail, and Zenless Zone Zero, released in September 2020, April 2023, and July 2024 respectively, have a 40% chance of releasing on Steam, depending on MiHoYo's revenue strategy. Fortnite, released in July 2017, has a 2% chance of coming to Steam as Epic Games seeks to retain full control over its revenue. Riot Games' titles, including League of Legends and Valorant, released between October 2009 and June 2020, have a 15% chance of being on Steam due to their profitable ecosystems. Minecraft, launched in November 2011, has a 50% chance of releasing on Steam, though integrating its Java and Bedrock editions poses challenges. Star Citizen, which began its first playable module in August 2013, has a 15% chance of coming to Steam due to its unique monetization strategy and ongoing development issues.