Candella beta

A modern Ren'Py operating environment

Developed and maintained by the team that brought you Unscripted, Candella offers a fresh new look and functionality to the popular AliceOS operating environment framework for Ren'Py.

Try it out Write your first app

Celeste Shell on Candella

Documentation Notice

The following documentation is written according to the latest release, v21.07 (Apple Cinnamon). View the changelog for information about previous releases and APIs.

What makes Candella different?

  • Release compatibility: Candella's release cycle syncs up with feature releases of Unscripted and the Ren'Py SDK, respectively.
  • Responsive feedback: AliceOS follows a strict release schedule and doesn't update as quickly with bug fixes or improvements, Candella gets feedback from the public as well as playtesters in the Unscripted Playtesting Program.
  • Targeted for Unscripted: Candella will add new features and improvements that will be helpful for Unscripted, such as native support for the NadiaVM language.
  • Simplified app development: Candella's application framework extensions make it easier to develop apps quickly without fiddling through delegate calls, making projects from scratch, or remembering what keys are valid. There's even a curated project repository that players can download from and where developers can upload releases to.

Try Candella today

Candella is available in pre-release form via the Unscripted Playtesting Program and can be downloaded from, but you can also build the source code locally to test drive the project.

Build from source ›