One of the most promising is Scenario. This AI tool lets game developers rapidly and authoritatively create high-quality assets that match the style of a game. It can generate IP-accurate content, control and customize its output, and work with several game engines, including Unity. Its tiered pricing structure means you can use it at different levels of intensity, so you can get the consistency and efficiency you need in game development.
Another option is 3D AI Studio. This collection of tools can turn text or images into 3D assets like models, animations and textures in a matter of seconds. With tools like Text to 3D, AI Texturing and Automatic LOD's Export, it can save you a lot of time and money. Its interface is designed to be easy to use so you don't have to be a 3D modeling expert or a prompt-crafting guru, making it a good option for game development and other 3D projects.