Sonic Rush 3D

Sonic Rush 3D reimagines the Nintendo DS classic as a full 3D platformer built in Unity. A dedicated fan team transformed Leaf Storm into a sprawling jungle stage where you boost through caves, grind rails, chain aerial tricks, and drift around curves — all with the original Rush soundtrack pumping in the background. Currently available as a free SAGE 2024 demo, this is one of the most ambitious DS-to-3D conversions in the Sonic fangame scene.

Download Sonic Rush 3D Free

Feature	Details
Developer	SonicRush3D, Lukestation, Schollidazed, Temzy + contributors
Engine	Unity
Platform	Windows (PC)
Genre	3D Boost Platformer
Status	Demo (v1.35 — SAGE 2024)
Controllers	Xbox, PlayStation, Switch Pro, Keyboard
Price	Free

Sonic Rush 3D - Sonic's detailed 3D character model

Sonic Rush 3D - Leaf Storm zone jungle environment in 3D

Sonic Rush 3D - Boosting through Leaf Storm with HUD visible

Download Sonic Rush 3D

The SAGE 2024 demo (v1.35) weighs around 80 MB and includes Leaf Storm Act 1 with full boost mechanics, trick combos, two graphic modes, and gamepad support. It comes as a RAR archive — extract and run, no installer required.

Download for Windows

How to Install Sonic Rush 3D

Windows

Download the RAR file and extract it with WinRAR or 7-Zip. Open the extracted folder and run SonicRush3D.exe. Connect your controller before launching — the game detects it at startup. Xbox, PlayStation, and Switch Pro controllers are all supported natively.

Bringing the DS to Three Dimensions

The original Sonic Rush on the Nintendo DS introduced the boost mechanic to the Sonic series and earned a loyal fanbase thanks to its tight level design and Hideki Naganuma's iconic soundtrack. Sonic Rush 3D takes that 2D/2.5D formula and rebuilds it entirely in three dimensions, turning the flat side-scrolling stages into explorable 3D environments while keeping the speed and flow of the original intact. The art direction uses a deliberate low-poly style that mimics the kind of 3D graphics a Nintendo DS might produce. Flat sprites for vegetation, chunky polygonal terrain, and a colorful palette give the game a look that feels both retro and intentional. The Sonic model itself stands out — well-crafted and expressive, easily one of the best-looking fan-made Sonic models around. You can switch between two visual modes at any time. Modern applies texture filtering for a cleaner look, though it tends to render slightly darker. DS Mode pixelates everything and bumps up the brightness, recreating the authentic handheld experience. DS Mode is the standout option here — it fully commits to the concept and makes the game feel like a lost DS title running in a 3D engine.

Full Moveset Breakdown

Where Sonic Rush 3D really shows its ambition is in the depth of Sonic's moveset. This is not a simple boost-to-win game. The controls pull from both the original Rush and Sonic Unleashed, giving you a wide toolkit:

Boost and Air Boost burn through your gauge for raw speed on the ground or in mid-air
Tricks are the core economy — perform them on ramps, rails, and after homing attacks to refill your boost gauge. Chaining tricks into combos rewards even more energy
Drifting handles tight curves at high speed without losing momentum (triggers)
Quickstep lets you dodge obstacles laterally during forward-running 3D sections (bumpers)
Homing Attack locks onto enemies and springs for precise mid-air targeting
Spin Dash, Slide, Double Jump, Lightspeed Dash, and Wall Bounce round out the toolkit for platforming and exploration

The trick system deserves special attention. Hitting ramps and rail sections at the right angle lets you chain aerial tricks that feel genuinely satisfying to land. Mastering when to trick and when to boost is what turns a messy first run into a smooth, high-speed clear.

Leaf Storm Act 1

The demo's single stage is Leaf Storm Act 1, the opening zone from the original game. In 3D, it becomes a dense jungle level packed with wooden bridges, canopy walkways, cave passages, grind rail networks, and trick ramps scattered across multiple vertical layers. A full run takes around four minutes, but the level hides enough branching paths that repeat playthroughs feel fresh. Some routes reward pure speed, others lead through platforming-heavy cave sections with rolling ball mechanics and cinematic camera sequences baked in. The stage constantly shifts between full 3D forward-running segments and side-view 2D sections that play closer to the DS original, creating a rhythm that keeps the pacing varied throughout.

Rough Edges Worth Knowing About

Sonic Rush 3D is a passion project still in active development, and the demo has some technical issues you should be aware of:

Performance: Frame rate drops are common, particularly in the second half of Leaf Storm. Even capable PCs can experience stuttering during heavy visual moments
Camera: Fast 3D sections sometimes outpace the camera, making it hard to read the terrain ahead. The side-view segments handle this much better
Input responsiveness: Certain actions — especially sliding — do not always register on the first press. Movement can feel slippery, which leads to unintended falls near ledges
Collision bugs: Occasional clipping through geometry and some unreliable edge detection near gaps

None of these break the experience entirely, and they are typical growing pains for an ambitious Unity demo. The team has been updating the build across multiple SAGE events since 2021, so improvements are ongoing.

Sonic Rush 3D FAQ

Is Sonic Rush 3D an official Sega game?

No. It is an unofficial fan project built in Unity by a group of Sonic fans. It has no affiliation with Sega or the original Sonic Rush developers.

Can I play as Blaze the Cat?

Not in the current demo. Only Sonic is available. The team has not confirmed whether Blaze will be added in future updates.

What is DS Mode?

A graphical option that pixelates the visuals and increases brightness to simulate the look of a Nintendo DS game. It gives the whole experience an authentic retro handheld feel.

How many levels are in the demo?

One — Leaf Storm Act 1. A previous demo included Water Palace, but it was removed due to framework changes. More content is planned for future releases.

The game runs poorly on my PC. What can I do?

Performance issues are a known problem with the current build. Close background applications, lower your screen resolution, and try switching between the Modern and DS Mode graphics options. Future updates should improve optimization.

Does it work on Mac or Linux?

The demo is Windows-only. Some players have reported issues running it through Wine or Proton on Linux, so native Windows is recommended.