Dota Underlords is Valve's hand at the latest craze sweeping the Game's Industry that is Auto Chess. Auto Chess was a Dota 2 Mod that a lot of people were playing. Through a series of legal conversations with the creators of the Mod, Valve made their own standalone game and the creators made theirs.
I really like the wonky style of UI the game has. All the main buttons are not quite perfect and the titles are tilted a bit to give it a quickly thrown-together look. Although there are a few screens that stand out from this style (like the Friend Code screens and Options Menu) the game tries to stick with it.
The game could use some love in some of the typography though. For instance, I feel like the Play Text in the Play Button is too close to the top edge and could be a little smaller or scooted down a little. I also might work on some of the letter spacing in the Play Button too (like I think the A and the Y are a little too far apart compared to the P and the L).
Overall, the game is fun and it'll be exciting to see what it turns into in a year or two.