This is quite cool! I enjoyed the ambience of this game, although the ambient noise is a bit rough. As I played through, I managed to bypass the entire puzzle in the second half entirely by accident, which is a slight issue. I also didn't get any cursor light-up when I hovered over intractable things. I do like the idea, an abandoned lab that you can time travel in. an idea for a possible update could be one in the past, so you could add more lore (just an idea though). Overall, for this being 3 days of work, this is pretty neat, with cool graphics and interesting ideas, but has rough ambience and it can be hard to tell where to go. Nice job, especially for the time spent!