but if you rewind your render quality expectations by about ten years, there are still great games being made for way under $100mm. I'll plug two of my current favorites:
* factorio ($20). if you don't already know what it is, I can't really summarize it here. the entire team is < 10 people, but it's rare example of engineering excellence combined with a carefully curated user experience. I try to get all the devs and PMs I work with to read their blog.
* zero k (free). a bit more wacky, but one of the best rts of all time. they also have an interesting dev blog, and for a nice cherry on top, it's open source. some feature requests on the forums get the reply "great idea, I look forward to your PR", which I find pretty funny.