Sorry, haven't been on this website in a while. Lilith's Throne is one of my favorite games. It's basically about being transported to an alternate dimension and you have to get back home. The story is mostly about humans and demons but it does have a ton of furry content and forced tranformations if you lose in battle so if that's not your thing you might not enjoy it. It's not finished but has a ton of content already. Think it took me around 40 hours to get through it. Hopefully I don't get into trouble posting links but you can find it at https://lilithsthrone.blogspot.com/
Magical camp is a eastern style rpg made in rpgmaker where a hapless young man is teleported to a training camp for Magical Girls. Can he graduate without revealing his gender? It's also one of my favorite transformation games. Honestly has great story. You can find it at https://tfgames.site/index.php?module=viewgame&id=812 That site actually has a ton of great adult games and transformation games. Probably biggest selection.
Last one is Hard Times in Hornstown which you can actually find on this site at https://unlikely.itch.io/hornstown It does have transformation elements but it's not the main focus. It's a life sim game. One of the better ones tbh except it doed have some starting options locked behind a paywall though it's a great game so worth it if you have the money. Great game with a ton of content. Hopefully this reply helped and you enjoy playing. Have a good one.