O3DE alternatives: ship a small 3D build

For O3DE alternatives, compare a playable prototype and its build pipeline.

• Import a scene with assets, materials, input, animation, and UI.
• Test scripting or programming workflow, physics, debugging, and editor stability.
• Package for each target platform and run on a clean machine.
• Measure build time, package size, performance, and team collaboration costs.
• Map engine-specific assets and components that would need rewriting.

An editor tour cannot reveal production migration cost. Judge the prototype the team can maintain and deliver.