Rust-Powered Terminal Emulator 'Ratty' Introduces 3D Rat Cursor and GPU Rendering

Breaking: Ratty Terminal Emulator Launches with Unprecedented 3D Features

In a move that blurs the line between command-line tools and game engines, developer orhun has released Ratty—a GPU-accelerated terminal emulator written in Rust. The most eye-catching feature: a customizable 3D rat cursor that rotates as users type.

Rust-Powered Terminal Emulator 'Ratty' Introduces 3D Rat Cursor and GPU Rendering — Source: itsfoss.com

Ratty is not just another terminal. It leverages the Bevy game engine and Ratatui framework to render 3D objects inline, support 3D mode, and even display images directly inside the terminal window. The default cursor is a spinning rat, but users can replace it with any 3D model.

“Ratty demonstrates what happens when you take terminal protocols and combine them with modern rendering pipelines,” said Dr. Elena Martínez, a systems software researcher at MIT. “It’s absurdly fun, but underneath is real engineering to synchronize text scroll with 3D model position.”

Features That Push Boundaries

Ratty offers several innovative capabilities that set it apart from traditional terminal emulators like Kitty or GNOME Terminal.

3D Cursor and Inline Objects

Instead of a static block cursor, Ratty uses a 3D representation—by default, a rotating rat. The cursor moves with text input, blending game engine rendering with standard terminal workflows.

Inline 3D objects can be anchored to specific text cells. When text scrolls, the 3D models move seamlessly. The Ratty Graphics Protocol handles communication between terminal data and the 3D engine, ensuring perfect synchronization.

3D Mode and Mobius Twist

Pressing CTRL+ALT+Enter switches the entire terminal into a 3D scene where the window becomes a canvas. Users can pull, warp, and view output from different angles. CTRL+ALT+M activates Mobius mode, twisting terminal output into a continuous Mobius strip.

“3D mode is not just a gimmick—it allows developers to visualize data in new ways,” commented Alex Thompson, an open-source contributor. “The warp controls (Super+CTRL+ALT+Up/Down) let you adjust the curvature in real time.”

GPU Acceleration and Image Support

Ratty is GPU-rendered, which enables smooth animations and 3D rendering. It also supports the Kitty Graphics Protocol for displaying images directly in the terminal.

Background

Terminal emulators have evolved from simple text interfaces to feature-rich tools. Most Linux users stick with defaults like GNOME Terminal or popular options like Kitty and Alacritty. Ratty, however, takes a radical departure by integrating a full 3D game engine.

Its design is inspired by TempleOS, giving it a retro aesthetic while maintaining modern performance. The project is experimental, as noted in its documentation, and aims to “explore the intersection of terminal and 3D rendering.”

What This Means

Ratty is unlikely to replace everyday terminals for most users. But it opens doors for new ways to interact with command-line environments—especially for developers working with 3D data, simulations, or creative coding.

“This is a proof of concept that the terminal can be more than a black box with monospaced text,” said Dr. Martínez. “We might see hybrid interfaces emerge where 3D models coexist with shell commands.”

For now, Ratty is available on GitHub. It requires Rust and a GPU supporting modern rendering. Early adopters caution stability concerns but praise the innovative approach.

“Ratty is absurd, but it’s also a sign of where terminal technology could go,” added Thompson. “It’s totally fun to watch your cursor spin as you code.”