Can You Play 3D Games with a 3D TV but No 3D-Ready Xbox?

It depends on your hardware:

Scenarios

• 3D TV + No Xbox: You can play 3D games via 3D Blu-ray player (PS3, some standalone players), 3D-capable PC (NVIDIA 3D Vision, AMD HD3D), or PS3 (native 3D support).
• Xbox One / Series X|S: No 3D gaming support. Microsoft dropped 3D after Xbox 360.
• Xbox 360: Supports 3D in select titles (Avatar, Batman: Arkham City, Gears of War 3) if your TV accepts 720p frame-packed or side-by-side 3D.

Reality Check

• 3D gaming is largely dead—few modern titles support it.
• 3D TVs are no longer manufactured.
• Active shutter glasses are expensive and cumbersome.

Better Investment: A high-refresh-rate 4K HDR display with VRR for modern flat gaming, or a VR headset (Quest 3, PSVR2) for true immersion.