- Serena's new adventures await in Oasis of Lilies! - 2 June 2026
The protagonist of Succubus Research Diary, Serena, will be a major character in the fifth Arcus Plume game, Oasis of Lilies! The daring explorer has left the dangers of the Underground behind for now, and has a steady job in a mysterious members-only club for fine gentlewomen. There, she will meet the new game's protagonist, Ayame, a cute but bold university student who is intent on gathering a harem of women around her...Of course, regardless of Ayame's plans, Serena can hardly keep her hands to herself when a lovely young woman is within her reach.The Oasis of Lilies will be released later this year, probably in September or October. The Steam store page has just been opened. Check it out and don't forget to wishlist it! ːheart_of_succubusː
- Version 1.5.3 - 8 May 2026
Fixed an issue with Steam Achievements that was caused by the game engine update Fixed an UI element on Steam Deck
- Version 1.5.2 - 1 May 2026
Updated the game engine for better compatibility with modern operating systems Introduced a number of fixes and improvements to the assistive self-voicing feature for the visually impaired If you have any issues with the new version of the game, the previous version is available in the "Game Versions & Betas" section of the "Properties" menu. By the way, the next Arcus Plume game will be announced in June. Serena is one of the main characters in the story! ːheart_of_succubusː
- "Nerisha's Adventures" Bundle Now Available! - 18 June 2024
The two games that feature the adventures of the pink-haired succubus, Nerisha, are now available as a bundle! ːheart_of_succubusː https://store.steampowered.com/bundle/42606/Nerishas_Adventures/
- Eleanor's Handmaid announced! - 26 May 2023
The fourth game by Arcus Plume is a light-hearted visual novel about a young noblewoman and her handmaid who are starting to take an interest in adult stuff. It is a story about close but platonic relationships turning into physical ones. It is also a story about... well, all right... everyone being horny all the time. Who would have guessed? Although Eleanor's Handmaid is not a direct sequel to Succubus Research Diary, the two games have some connections. Julie D'Faerwyn, the mother of the new game's protagonist, made a brief but passionate appearance in the Serena's Services story arc of Succubus Research Diary (updates 1.4 and 1.5). Everyone's favorite pink-haired succubus, Nerisha, will in turn have a role in Eleanor's Handmaid. Check out the new game below. And please consider adding it to your wishlist. ːheart_of_succubusː https://store.steampowered.com/app/2339380/Eleanors_Handma…
- Version 1.5.1 - 8 December 2022
A small post-final(?) update that fixes a bunch of typos and grammatical errors in the final content update. ːunit_of_manaː
- Version 1.5.0: The Grand Finale - 5 December 2022
The Serena's Services story arc ends with a bang! ːstar_of_masteryː (Disclaimer: no explosions included.) This content update isn't called The Grand Finale for no reason. It's not only the final update but also easily the biggest one. With a word count of over 11000 words, it's approximately as big as the two previous updates combined! Of course, there's plenty of new art as well! The mysterious noblewoman Lady Julie was briefly seen in the previous update, but now it's time for her to get into action. Be warned that she's a woman who can't be easily stopped once she has gotten started... ːheart_of_succubusː New things in a nutshell: New character and event art Lady Julie starring in the new 11000 word story New achievements Other changes and fixes: A handful of typos fixed in previously released content Some small tweaks to in-game menus How to access the new content? Serena's Services…
- Coming Soon: The Final Update - 21 November 2022
The biggest, sexiest, and finalest update is just around the corner! Approximately 85% complete at the time of writing this, the update will be ready for release in early December. It will be more than twice as big as the previous content update and feature the enigmatic Lady Julie. The Serena's Services story arc will finally reach its conclusion! Stay tuned! ːstar_of_masteryː
- Version 1.4.0: An Old Friend - 6 September 2022
Sometimes, a chance encounter with an old friend may open up new possibilities. What lies in store for Serena and Nerisha? Only time will tell... It's the first anniversary of the release of Succubus Research Diary, and here's a little something to celebrate it: the fourth content update! This update adds two more episodes to the "Serena's Services" story arc and introduces two new characters to the game! ːheart_of_succubusː New things in a nutshell: New character and event art New 4500 word story featuring Denice and Julie New achievements How to access the new content? Serena's Services can be accessed after reaching Ending 1. Playing episodes 1 and 3 will unlock the newest episodes. 2 and 4 are not required for mysterious reasons. ːwing_leftː Have fun! ːwing_rightː
- The Story Continues - 1 August 2022
If you're an enthusiastic succubus researcher, there is good news and good news for you. No bad news at all. Yay! ːheart_of_succubusː The first piece of good news is that Succubus Research Diary will get still get at least two more free content updates. The next update is coming out in early September! September 6, 2022: ːstar_of_masteryː Version 1.4.0: An Old Friend ːstar_of_masteryː The release date (or even month) of the fifth content update, however, is still yet to be decided, because it will connect the story of Succubus Research Diary with the yet-to-be-announced next Arcus Plume game. The update will probably come out shortly after the announcement of the new game. The second piece of good news is that Serena and Nerisha will make their appearance in the above-mentioned next game as well! Not as major characters, though. ːwing_leftː ːwing_rightː How do they end up in that game?…
- Version 1.3.1 - 30 April 2022
This is a small update that corrects a couple of dozen grammatical errors and typos. ːunit_of_manaː
- Version 1.3.0: Nerisha's Services - 11 April 2022
It's Nerisha's turn to be the protagonist! The story so far has been told almost exclusively from Serena's point of view. But not this time! It's time for the cute succubus Nerisha to bask in the spotlight! Oh, and she will also meet Jenny for the first time. And not only meet her... ːheart_of_succubusː Nerisha's Services is essentially a sequel to Serena's Services (added in version 1.2.0). To Nerisha's dismay, the new content can be found in the Serena's Services submenu. New things in a nutshell: New event art New 7000 word story featuring Nerisha as the protagonist! ːstar_of_masteryː New achievements How to access the new content? The Serena's Services submenu can be accessed after reaching Ending 1. Nerisha's Services becomes available after playing the first episode of Serena's Services. The final episode requires you to play all other episodes first. P.S. Nerisha's Services along…
- Trading Cards & Update News - 4 March 2022
Trading cards Succubus Research Diary became eligible for the virtual goodies known as Steam Community Items a while ago. And now they are ready and approved for release! If you are planning on exploring the Underground, take some Trading Cards, Badges, Emoticons, and Profile Backgrounds with you. That's what the renowned explorer Serena would certainly not do! The trading cards feature the main characters and the rooms of Nerisha's home. The badges are modeled after Nerisha's garden plants. The backgrounds feature Serena and Nerisha, Underground scenery, and decorative plant designs. The emoticons are succubus-themed items such as horns, wings, and hearts. You can also find the profile background and emoticons in the Points Shop (if you can't find them in there, please check your adult content settings). Update News Succubus Research Diary will get another content update in April. The…
- Version 1.2.0: Serena's Services - 1 December 2021
The second content update is here! Serena's Services expands the story in a new direction as well as introduces a new character, Jenny, to the game. What does Serena do to make the big bucks and what does it have to do with Jenny? It's time to find out! New and shiny things: New character, background, and event art New 5000 word story about Serena's business with Jenny New achievements How to access the new content? You will find "Serena's Services" in the main menu of the game. If you have already reached Ending 1, you can access the new content right away. If not... well, you know what to do. :) Or not do. :(
- Coming Soon: Serena's Services - 23 November 2021
Succubus Research Diary will get another content update in early December. The upcoming update will add a new short story (split into two episodes) that takes place after Ending 1. The story will be entirely focused on Serena's secondary profession (whatever that might be...) and it will introduce a new character to the game! Her name is Jenny.
- Version 1.1.0: Little Epilogues - 11 October 2021
This is a content update that adds epilogues to the game: one for each ending. Find out what Serena and Nerisha are up to shortly after the endings! This update adds the following: More content: approx. 5000 words and 3 event CGs (+23 variants) 2 new achievements New functionality in the 'Sex Scenes' gallery: shortcuts to endings and epilogues There are two ways to access the new content: Reach an ending and you'll see a new choice that leads to the respective epilogue. If you have already reached at least one ending, you'll find a new button in the 'Sex Scenes' gallery that opens a list of shortcuts that lead to the endings and epilogues. May your mana reserves be sufficient.
- Coming Soon: Little Epilogues - 27 September 2021
Succubus Research Diary will get a content update in a couple of weeks. As the title suggests, the upcoming update will add epilogues to the game: one for each ending. It is to be expected that Serena and Nerisha will have some "non-platonic fun" in these follow-up episodes...
- Succubus Research Diary will be released on September 6th! - 16 August 2021
Succubus Research Diary finally has a release date. Although it's not quite in late August as earlier planned, it's still in the very near future. Only three weeks now until the exciting, erotic, and adult-rated adventures of Serena and Nerisha can begin! Prepare yourself to dive into the mysterious Underground where you can learn what happens when an exceptionally seductive human meets a totally inexperienced succubus...
- Release postponed to August - 8 May 2021
Succubus Research Diary will be released in August instead of June. There are mainly two reasons for this change. First, the earlier estimate was too optimistic (not to say unrealistic) to begin with. Second, the game will be somewhat longer than initially planned. I believe that the extra time investment is worth it to make Succubus Research Diary a better game. Thank you for your patience (if you have any to spare). -kuroha238 (developer)
