A "[[software toy]]" is a term often used in the field of video games to refer to a type of software that doesn't have a specific goal, win conditions, or failure states that are typical in most games. Instead, it provides a sandbox environment in which users can play and experiment freely without pursuing predefined objectives.
Software toys are more about exploration and creativity. They provide tools and environments that users can manipulate in various ways to see what happens. Examples of software toys include many of the 'Sim' games by Will Wright, such as 'SimCity', 'SimEarth', and 'The Sims', as well as other titles like 'Minecraft' in creative mode, and 'Garry's Mod'.
The idea is to create an interactive experience that's more akin to playing with a physical toy—like a set of building blocks—than playing a traditional [[game]]. Users can experiment, build, manipulate, and explore without needing to worry about winning or losing.