Actually, there is no way to play Roblox without downloading it. Roblox requires to be downloaded. But when you said specifically from Google, you maybe can use a site called http://Duckduckgo.com that can keep trackers away. Downloading it from Google won’t give you any viruses by the way, in case if you were wondering.Can we play Roblox without downloading it?
Roblox is available on the PC, Mac, iOS, Android, and Xbox One. If you're curious about the game and you want to get in on the fun, you'll have to download it for yourself. As of now, there's no way to play Roblox without downloading. As of this writing, there's no way to play Roblox within your browser window.