The Ultimate
Sandbox Game.
Experience a massive-scale physics sandbox. Grow, shrink, stomp, throw, and build with F3X. Open to everyone registered as 16 or older on Roblox.
Game Features
Everything you need to grow, shrink, and fight your friends.
Macro & Micro Scaling
Seamlessly change your size. Tower over the city as a giant or hide in the micro-terrain. Your size changes your speed, mass, and how you play.
Intense PvP
Jump into fast, physics-driven fights. Use your size and the environment to completely crush your opponents.
Watch & Bet
Watch arena matches and bet your in-game credits on the winner to climb the global leaderboards.
Custom Ragdolls
Every hit, throw, and crash is fully driven by our custom physics. It creates unpredictable and hilarious moments every time you play.
How to Play
We have completely removed the whitelist barriers. Select your preference below and jump into the sandbox instantly.
Public Servers
- Whitelist completely disabled — zero wait times.
- Access populated public servers instantly.
- Meet friends and engage in massive physics battles.
- Automatic filter for accounts aged 16 and older.
Private Servers
- Bypass public guidelines and invite whoever you want.
- F3X Building Tool creations save automatically.
- Perfect for hosting building sessions and custom events.
- Complete administrative control over your personal world.
16+ Age Gated
By moving security to Roblox's native 16+ maturity policy, we naturally filter out bot networks and spam while preserving a mature community atmosphere.
Sabig's Original Map
We wrote the physics engine and game code entirely from scratch for maximum performance, but we proudly feature the original map officially gifted to us by sabig.
Strict Active Moderation
No whitelist doesn't mean no rules. Our active game staff monitors public lobbies daily and enforces strict anti-toxicity policies to ensure everyone can build safely.