Plane Crazy [UPDATE]

Plane Crazy is Roblox's premier physics sandbox, developed by Plane Crazy Developers and running continuously since July 2014. With over 454 million visits and 1.88 million favorites across more than a decade of updates, it is one of the defining sandbox experiences on the platform - comparable in spirit to Kerbal Space Program or LEGO Worlds but built entirely inside Roblox's physics engine.

Players design and test creations from scratch using a block-and-part building system, then fly, drive, race, or battle their machines against others:

• 🚗 Build planes, cars, boats, rockets, trains, mechs, machines, and houses using a rich part library
• 🗺️ Test creations across nine distinct sub-place environments including peaceful servers and showcase worlds
• ⚔️ Battle other players with armed builds in PvP mode across dedicated combat arenas
• 🏠 Showcase finished creations for other players to observe and study

The physics engine governs everything - successful builds fly and function exactly as their mechanics dictate, while failed ones crash spectacularly. Gamepasses expand the build toolkit with tools like the Drag Selector for multi-block selection, the Jetpack for elevated building access, and the Speaker block for custom audio on builds.

With 2,000 to 5,000 concurrent players at any given time, Plane Crazy has no competitor at its scope on Roblox. Players who want a more goal-directed vehicle-building experience can also explore Build A Boat For Treasure for a structured challenge format.