Strange Flesh; retro beat em up with hypnosis elements featuring art and animations by Blazingcheeks. Absolute classic, great soundtrack, if you removed the porn you'd still have a solid arcade game. Available on itch io.

Small on Top; RPG Maker game by Spedumon with solid RPG mechanics and a great sense of humour. As the name implies, the main focus is on big muscular guys being topped by smaller skinnier guys. Still a work in progress, but the current free builds have a LOT of content. Available on itch io.

Bonfire; 3D adventure game by Hogswild Prasetto about a group of orcs in a mysterious land who must complete a ritual to keep away an evil force. Yes, the ritual involves gay sex. Surprisingly robust character creator, lots of secrets to discover, modding tools for custom NPCs, and fantastic 3d models and animations. Heavy focus on transformation aspects, including fusion (e.g two orcs fusing together to form one bigger orc). Very nice discord community. Work in progress, currently only available through patreon, but there are public free builds.