Given the category is (appropriately) "Simulation", I'm going to give this a pass since it's not actually a game, more like exploring a room. But as a simulation, it's fine. I'd check the weights of the objects to make sure it's proportional to their real-life counterparts (for example, the wardrobe is way too light). It would also be convenient to be able to restart the game when you mess the place up too much (e.g. by pressing 'R'). 'Esc' simply quits the game which is useless, because it doesn't restart and you can't access the game again without reloading the page.
If you want to improve the scene, make sure to add other textures besides just one (the colour/diffuse/albedo texture), such as normal map, height map, specular map, perhaps displacement (depends on your shading mode) and fiddle with the material settings.
Speaking of the wardrobe again, that's not how wood would reflect light (way too shiny) and because normal map etc. wasn't used, it appears flat (even though there are drawers etc.).
Also, the door texture seems slightly tilted and doesn't look right on the model.
As for the copyright – first, it would be pretty hard to extract models from a built project (and without having access to the files) and second (and more importantly), every piece of work is protected by copyright, all over the world, from the moment of its creation, until after 70 years after the death of its author. BY DEFAULT.
You don't have to say nobody is allowed to use it, in fact, the opposite is true. You'd have to say you allow people to use the models, otherwise, they won't legally be able to.
Good luck with further modelling. :)