Web client Easiest
Runs in your browser over a WebSocket connection. Nothing to install, but expect slightly higher latency than the native client.
Launch in browserChromium, Firefox, or Safari. No mobile support yet.
Alpha access
Download Brevison.
Three ways to play. Pick whatever fits — they all connect to the same world.
Native client Recommended
The original Open-RSC client wrapped for Brevison. Lowest latency, native window, plays best on a real keyboard.
Download .jar (requires Java) Windows launcher (.exe)Java 17+ required for the .jar. The launcher bundles its own JRE.
Source
Brevison's deploy scripts, configs, design docs, and overlay code are on GitHub. The underlying game server is the upstream Open-RSC framework.
Brevison on GitHub Open-RSC upstreamConnection details
| World name | Brevison |
|---|---|
| Hostname | brevison.org |
| Game port (TCP) | 43595 |
| WebSocket port | 43495 |
| Profile | RSC Cabbage + Brevison customs |
| Tick rate | 430 ms (30% faster than vanilla) |
| XP rate | 5× (no fatigue) |
| Max players | 100 (alpha) |
First-time setup
- Download the client of your choice above.
- Launch and click New User on the login screen.
- Create your character — choose a name, race, and starting skin.
- Skip the tutorial (optional) via the menu link in the in-game options.
- Find Tarvik the Hunter at home spawn — he hands out Slayer tasks.
System requirements
- OS: Windows 10/11, macOS 11+, Linux (any 64-bit)
- Java: 17 or newer for the .jar client
- RAM: 1 GB free
- Network: 0.5 Mbps stable
- Disk: ~50 MB for client + cache
Troubleshooting
If the client connects but the world is dark or empty, your cache is stale — delete ~/.brevison-cache/ and relaunch.
If the launcher refuses to start on Windows, you may need to right-click → Properties → Unblock.
For port-blocked networks (corporate / hotel WiFi), use the web client over WebSocket — it tunnels through 443/80 where possible.