I tried Oxygen Not Included, after watching some Let's Plays of it that seemed interesting. However, once I actually played it I found it to be really boring compared to Factorio. Unfortunately, I didn't keep track of the time so played for more than 2 hours and so couldn't get a refund from Steam, otherwise I would have refunded it. Haven't touched it since.

By contrast, I've played hundreds and hundreds of hours of Factorio, which I just can't get enough of, especially with mods, which increase the scope and possibilities of the game tremendously.