If you are looking for the official download link or the most recent patch notes, I can help you find that if you tell me the creator's name.
For information, updates, or to download this specific version, you should check the developer's official Patreon page. SuccubusContract-v0.19.9_Patreon-pc.zip
Based on standard file naming conventions for independent games, this likely refers to: Succubus Contract Version: 0.19.9 Release Channel: Patreon Exclusive (Patreon-pc) If you are looking for the official download