If you want to create photorealistic scenery for your game, RealityCapture is a top choice. It uses photogrammetry to construct textured 3D meshes and other assets from photos and laser scans, so it's well-suited for game development. With tools like automatic 3D model generation and orthographic projections, RealityCapture can create photorealistic scenery rapidly and easily.
Another option is 3D AI Studio, an AI-based tool that turns text or images into high-quality 3D assets in a matter of seconds. It's designed to be easy to use and fast, with options like Text to 3D, Image to 3D and AI Texturing. It can help you cut costs and time spent on traditional 3D modeling and let you concentrate on the creative aspects of your game.
Blockade Labs has a newer approach with Skybox AI, which uses AI to create 360° panoramic worlds. It's geared for game developers, with options like Text-to-Skybox and a Prompt Enhancer to refine results. It can handle high resolutions and can be integrated with the Unity Engine, so it's a good option for building immersive game environments.
If you want something more flexible, check out Meshy, which can create 3D models from text prompts and 2D images. It can accommodate a variety of art styles and can automatically generate PBR maps, too, so it's good for AR/VR and gaming projects. With several export formats and a variety of pricing plans, Meshy should be adaptable to your game development needs and budget.