Instances

An instance gathers a game version, its mods, its worlds and its settings in one isolated folder. Two instances never step on each other: you can keep a quiet survival world on 1.21.3 next to a test bench on 1.22.0-rc.1, each with its own mods.

Creating an instance

Creation goes through a four-step wizard: name, game version, icon, then a summary before confirming. The name also names the folder (Vintage Survival becomes the instances/vintage-survival folder, for instance).

Where your data lives

Each instance has its own data/ subfolder, the one the game sees and writes its worlds, configuration and mods into. On Linux, for example:

~/.local/share/prospect/instances/<instance-name>/data/

Worlds live in data/Saves/, mods in data/Mods/, and the instance page lists your worlds on its own tab. Prospect’s own metadata (name, creation date, playtime) sits next to data/, never inside it: the game can write freely without ever colliding with it.

Duplicating an instance

Duplicating an instance copies its whole data/ folder under a new name: worlds, configuration and mods included. It is the simplest way to try a risky mod or a new game version without touching a world you care about.

Backing up an instance

The Options tab keeps backups: safety archives of the instance’s data/ folder. Back up by hand, or automatically before every launch with a number of archives to keep, and restoring brings the instance back to the archived state.

Checking an instance

“Check the instance”, in the menu of its page, runs a local diagnosis: game version complete, .NET present, mod dependencies satisfied, compatibility, disk space. Nothing is downloaded and no network call is made; the report reads your disk. Each finding carries its own fix, such as installing the missing game version or the absent dependency, one click away.