QuoteUFO 50 (https://store.steampowered.com/app/1147860/UFO_50/) is what happens when you get a handful of indie developers together who tell each other "Oh ho ho ho!! Let's make a bunch of retro games, just like old times! How hard could it be?" Apparently the answer is "Very hard" and "It took us 8 years please save us we're dying!!!"
Anyhow, one of the games in it is called "Vainger." Critics are calling it a "metroidvania." I call it "pretty decent." The level and map design is kinda wonky in a lot of ways, but I like it. It has a neat futuristic aesthetic and a gravity flipping mechanic. You should play it.
You can already guess the reason I'm bringing this particular game up: I made a map of it! Check it out on the maps page (https://samarantes.neocities.org/maps/)!
Note: The current version of the map is technically a "release candidate." I might update it within the next couple of days depending on feedback. Thank you for your understanding.
(https://samarantes.neocities.org/maps/PC/Vainger.png)