Every world you visit in Highrise — from high-BPM clubs to cozy cafes to tranquil parks — was built in Highrise Studio, which lets anyone bring their dream world to life using an interactive editor and a Lua scripting API. Since Studio’s release in 2024, the team at Pocket Worlds and passionate creators in Highrise’s community have used it every day to build new experiences.
In the two years since, the way people interface with technology has changed dramatically: AI agents increasingly serve as the interface through which work gets done. We at Pocket Labs wanted to bring this power to Highrise Studio, enabling both new and experienced creators to build worlds faster than ever before.
Meet Rosie
Today, we’re introducing Rosie, the AI agent for Highrise Studio.
Along with all of the typical computer-use capabilities you’d expect from an AI agent, Rosie solves two key problems specific to Studio:
- Interaction: the Studio editor was designed for humans, with an interface optimized more for hands than for the command line. Rosie comes equipped with tools that allow her to design and test worlds in the editor just like a human can.
- Knowledge: the scripts that power Studio worlds rely on patterns and APIs that AI models won’t learn crawling the public web. Rosie bridges this gap by bringing scripting best practices and access to Studio’s extensive documentation into every conversation.
Creators can work with Rosie right in the Highrise Studio editor and watch their dream come to life.
The force multiplier behind Highrise events
The team at Pocket Worlds has been using Rosie extensively to ship new and better worlds, and nowhere is this more obvious than in Highrise’s event worlds.
Every week since late January, alongside a new themed clothing collection, Highrise has released a new world with unique gameplay mechanics designed to bring that collection to life. Building event worlds at this cadence has only become possible with Rosie: Rosie writes 95% of the code powering these worlds.
Code is not Rosie's only contribution to these events. As Drew, the one-man development team behind event worlds, put it:
Calling Rosie a code generator is an undersell. She completely changes how I work.
For each event world, one of the seven days before launch is now dedicated entirely to co-building the spec with Rosie. Reacting to an initial concept, Rosie pushes back, asks clarifying questions, and surfaces surprising edge cases. The fully-formed spec becomes the context backbone for the other six days of building and sets up a clear path of execution.
As a fully-capable AI agent, Rosie can also solve development problems outside of Highrise Studio. Any task necessary for shipping a world — modifying assets in bulk, debugging development environment issues, addressing QA reports — is within the realm of possibility. In one case, given only a description of the problem, Rosie solved misalignments in in-game audio clips by downloading ffmpeg, calculating the exact tempo adjustments needed, and batch-processing every sound file.
Without Rosie transforming the development process, the incredible pace of Highrise's events would simply not be possible.
Unlocking creativity
We're extremely excited to see what Rosie enables next for Highrise's creators. Since her alpha release to the community in February, we've already received a wave of positive feedback:
I love Rosie, it's changed the game! I could honestly tinker with this for hours and hours and hours and hours and hours! 😛
Rosie has been a really positive experience for me, and I’m genuinely excited to keep using her on future projects.
I will be going full force and ham on making 5 awesome worlds to show to the world of highrise 😩👌
Ready to start building with Rosie? Check out the guide here and unlock your creativity.