The only legal and safe way to play Yandere Simulator without downloading the large game files to your computer hard drive is to play the in your browser.
If you're interested in experiencing the game's concept without downloading it, you can try a text-based simulation: how to play yandere simulator without downloading it
– Contains detailed guides on rivals, stealth mechanics, reputation systems, and schematics. The only legal and safe way to play
While it's not possible to fully play Yandere Simulator without downloading it, there are ways to experience the game's concept and mechanics without committing to a download. Keep in mind that these alternatives are limited and might not offer the same experience as playing the game itself. If you're interested in the game, consider supporting the developer by purchasing it on official channels. Keep in mind that these alternatives are limited
If you want to experience the full 3D environment on a phone or non-gaming PC without an installation, cloud streaming is your best choice.
To play without downloading: