Wikipedia has a list of the most expensive video games to develop, with a lower limit of $50mil. https://en.wikipedia.org/wiki/List_of_most_expensive_video_g...

The top of the list is Genshin Impact, although it'll probably be displaced by GTA6 soon - that one's estimated to come in at $1.5-2 million. There's multiple FPS games on there but there's some pretty expensive open-world games too.