Some online games that offer a non-linear progression system include:
"The Elder Scrolls Online": This MMORPG allows players to explore the vast world of Tamriel at their own pace and choose which quests and activities to pursue.
"No Man's Sky": This open-world exploration game gives players the freedom to explore procedurally generated planets and galaxies in any order they choose.
"Stardew Valley": This farming simulation game lets players progress at their own pace by growing crops, raising animals, fishing, mining, and building relationships with townspeople.
"Divinity: Original Sin 2": This RPG offers a non-linear story with multiple paths and choices that can significantly impact the game's outcome.
"Terraria": This sandbox game allows players to explore and build in a 2D world with non-linear progression paths based on player choices and exploration.
