https://assetstore.unity.com/packages/tools/integration/toolkit-for-steamworks-2025-299310

Over a decade of continuous innovation & improvement, Toolkit for Steamworks is a reliable resource driving hundreds of games and is trusted by thousands of developers. Do More with Heathen!

Unity Assets - Game Creator v1.1.1
https://assetstore.unity.com/packages/templates/systems/game-creator-89443

Game Creator is a complete tools suite that will help you kickstart your game in a matter of minutes. It empowers artists, designers and programmers with the necessary tools to create games without having to write a single line of code.

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A low poly Modular Character asset pack to create characters for your fantasy game or make a character creator for your players to make their own hero.

https://assetstore.unity.com/packages/3d/characters/humanoids/funny-characters-animated-low-poly-3d-models-242892

Funny Characters is a low-poly 3D model pack that allows you to create your own unique, funny, and memorable combinations. With an easy-to-use navigation system, you can quickly browse through all the assets and select the ones you need, or generate a random model by simply choosing the desired categories, such as glasses, hat, gloves, or backpack. Try it out and have fun!

https://assetstore.unity.com/packages/3d/environments/fantasy/suntail-stylized-fantasy-village-203303

Suntail - is a package that contains everything you need to create a fantasy medieval village: models, textures, FX, shaders, sounds and more. Fully customizable and flexible.

https://assetstore.unity.com/packages/tools/level-design/smarttools-work-smarter-not-harder-299042

Work Smarter, Not Harder. Supercharge your Unity development with SmartTools, the powerful scene view overlay that saves you time and makes tedious tasks quicker to complete. SmartTools streamlines your workflow, helping you get more done with less hassle.