.love files can be run on common operating systems, but it requires you install/download the Love2D framework first. I would've made Mac and Windows executables had I more time, but it was getting late and I went the quick route. Anyways:
- Download Love2D from https://love2d.org/.
- With the engine downloaded, open it so that your operating system associates .love files with it. It should show a "NO GAME" screen.
- Double-click or drag-and-drop the game into Love2D. The game should run.