Games like O3DX
Games like O3DX include Wreckfest, art of rally, Earn to Die 2, Noita, and BeamNG.drive. We matched them by the tags players give O3DX on Steam (Indie, Racing, Action, Offroad, and Physics): closest matches first, and among equally close ones the better-known games.

Wreckfest
Shared: Racing · Indie · Action

art of rally
Shared: Racing · Physics · Driving

Earn to Die 2
Shared: Action · Indie · Physics

Noita
Shared: Physics · Indie · Difficult

BeamNG.drive
Shared: Physics · Driving · Racing

DiRT Rally 2.0
Shared: Racing · Offroad · Driving

Assetto Corsa
Shared: Racing · Driving · Physics

Skul: The Hero Slayer
Shared: Indie · Action · Difficult

Lonely Mountains: Downhill
Shared: Indie · Racing · Physics

Need for Speed™ Heat
Shared: Racing · Action · Driving

Absolute Drift
Shared: Racing · Physics · Driving

FlatOut
Shared: Racing · Action · Driving

GRIP: Combat Racing
Shared: Racing · Indie · Action

#DRIVE Rally
Shared: Racing · Driving · Action

The Crew™ 2
Shared: Racing · Action · Driving

OmniBus
Shared: Indie · Racing · Action

My Friend Pedro
Shared: Indie · Action · Side Scroller

Automobilista 2
Shared: Racing · Indie · Driving

Need for Speed™ Unbound
Shared: Racing · Action · Driving

Guts and Glory
Shared: Racing · Action · Indie

Inertial Drift
Shared: Indie · Racing · Driving

CarX Drift Racing Online
Shared: Racing · Physics · Driving

Intrusion 2
Shared: Indie · Action · Physics

RV There Yet?
Shared: Driving · Physics · Indie