Thanks to the introduction of deeplinking, we can now launch games directly from links without using any workarounds such as chrome extentions or external programs.
To use: simply paste the gameID into this link roblox://placeId=1234 and done!
Note: On the first try, you may get an error saying you don’t have permission to join the game. In this case, click leave, then sign into the app and this problem shouldn’t occur again.
To implement into a windows desktop shortcut: just go to your desktop, right click and create a new shortcut. From there paste in your roblox://placeId=1234 into the location field, set a name for the shortcut, then your done.
Click and drag this icon onto your wallpaper while on the game’s page. It makes the game’s page a desktop icon which might make it easier. You can also pin this icon to your taskbar or start menu for easier access.
just run roblox://gameIdHere to open a game. Once you do that, you can save the link to your desktop by holding click on the i next to the url and dragging it onto your desktop. Im pretty sure this works, although it can send you to the roblox app instead of the web client.