Screenshots
Watch trailer on Steam ↗Sweet Science – The Girls of Silversee Castle
TBF · Published by TBF, TLS · Official site ↗
Positive — 86% positive (44 reviews) · 38 achievements
Last updated 27 Sept 2026
This lighthearted visual novel lets you meet four quirky young women. A fun and highly interactive story taking you back in time – to the 1990s and a castle full of science, mysteries and – perhaps – romance...
Free to PlayDJCTQ 12
Free
Adventure, Free To Play, Casual · 2024 · More free games
Journey through Silversee Castle's science-filled mysteries with four unique young women in TBF’s 2024 adventure game, a fun and highly interactive trip back to the 1990s.
About this game
What if...
...you went back in time to a place you never wanted to go to?And there you are: at a weird science camp in a prestigious boarding school in Silversee Castle in the 1990s. Will you solve the mystery of how you ended up there? And will you be able to return to your time? And maybe find love?
In this visual novel you will meet four extraordinary (and quirky) girls, learn more about your world and uncover the mystery. On the way, original puzzles are challenging you. Master them – or simply chicken out.
Dive into the story and find out how sweet science can be!
Features & Gameplay:
The visual novel includes eight good endings and a few bad ones. Make the right decisions and master the minigames to reach the ending of your choice! The minigames feature unique, science inspired puzzles that will challenge your mind (but you can skip them if it's too hard for you). Moreover, in one of the minigames you will challenge your favorite character to a game of Go, but don't worry: Mr Young is going to explain the rules to you before the game.Sweet Science contains several interwoven story lines. To uncover them all, you will play more than one route. One route contains around 5 hours of gameplay, for all routes we estimate 15-20 hours of game play. On the way, you will encounter hundreds of graphics and a full soundtrack, featuring the song "Butterfly Lullaby" composed for this game by Alec Weesner, and the song "Time", sung by Emilia.
"Sweet Science" is waiting for you. – Will you uncover all its secrets?
Cast:
Artificial Intelligence
This is one of the first real AI-generated visual novels: nearly all artwork was generated by AI artists (NovelAI, DALL-E 2, Diffusion Bee). But is this artwork art? The story touches on this and many other questions in an entertaining and open-minded way.
Steam Release Special
To celebrate the Steam release, we have added one extra scene. You can access it from the main menu at "Extra+". It contains mild spoilers, so better watch after finishing at least the first three days of the game. Enjoy! :)System Requirements
Will my PC run this? →Minimum
Minimum:
- OS: All recent versions
Supported Languages
English, German
Latest news
Patch NotesOfficial
Minor update – important for some Windows 11 users
On some Windows 11 configurations, some players had issues with the game not starting. If you encountered such problems, please reinstall the game. It will then work. Have fun with the game!Read full article on Community Announcements (thelastsecret)Patch NotesOfficial
Fixed a nasty bug. Now the game should start again!
Fixed a nasty bug that prevented the game from starting on some systems. Now the game should start again without issues! We are sorry for this problem.Read full article on Community Announcements (thelastsecret)AnnouncementsOfficial
Braking news: Sequel to "Sweet Science" announced!
More to come! We are working on a sequel to "Sweet Science". We don't want to give you too many spoilers, but the working title is "Azuki Afterstory", so it will center around Azuki, your favorite character from Sweet Science... But of course Patti, Marie and Sylvia will also feature, as will a certain robot that you might have seen elsewhere. And then there's the little girl on the picture. Who is she...? (Make your guess!) Stay tuned if you want to be updated on the progress: join our brand new Discord channel "The Last Secret" and our new subreddt r/TheLastSecret. {STEAM_CLAN_IMAGE}/43632127/0b6fa8ea188de4179fe45e79ae439344f03ba672.pngRead full article on Community Announcements (thelastsecret)Patch NotesOfficial
A better game with better music
We have updated the game for even more fun: - We've added lofi background music tracks for the math and astronomy class as an alternative to the classical music by Bach. You can chose in the settings which style you prefer. It might be easier to focus on a puzzle with the lofi music instead of Bach, but it's up to you. :) - Improved the explanation regarding the story guide - Corrected some spellingRead full article on Community Announcements (thelastsecret)Patch NotesOfficial
Small improvements
Following some players feedback, we have made minor improvements to the game, in particular some art work.Read full article on Community Announcements (thelastsecret)
