If you haven't seen or heard of the game, the team behind it describes it in the following way – "Phantom Trigger is a Hardcore Neon Slasher with RPG and Roguelike elements." That's a whole lot of different genres to fit in one game if you ask us.
Until you've seen it, it's impossible to understand the scale at which a game like Cities: Skylines exists. Even starting a new city in a small area seems like an insurmountable task. The complexity of the controls and decisions at your behest seem unlearnable. But these things don't mean the game isn't a ton of fun.