Sid Classic
Released Feb 2021
Sid! Powerful souls were born here as beautiful women or boys. Then, they protect the Time and Space engine here. You can see a school fantasy that transcends time and space in a parallel world.
80% positive · 136 reviews
Not yet
Released, ongoing live service game
High confidence
Live Service
Not yet
Released, ongoing live service game
High confidence
Live Service
Where to get it
Free on Steam
Evaluation
Sid Classic launched on February 18, 2021 and is structured as a live service game. The store description explicitly advertises recurring seasonal content — including rotating "Seasons" that introduce new characters for limited periods, time-limited Boss Raids with other players, competitive Mileage events, and periodic Student Body Elections. These are hallmarks of a game designed to receive indefinite ongoing content rather than a fixed release. All 50 developer news posts scanned were seasonal event announcements, which further confirms the live service operating model: the developer communicates through event rotations rather than traditional patch notes or content announcements. The game is actively purchasable and running its event cycle.
Evidence
Store description explicitly lists ongoing live service features: Seasons (rotating limited-time Sidians), Boss Raids, Mileage competitions, Student Body Elections, and Circle multiplayer — all indicating a perpetual content rotation model.
All 50 developer news posts scanned were seasonal event announcements, consistent with a live service game that communicates primarily through recurring event cycles rather than traditional update notes.
Media
Details
Developer
Publisher
Singta inc.
Achievements
—
Platform
Windows
Controller
—
Steam Deck
Playable
Players
Single-player · Multiplayer · Co-op
About this game
[Game Introduction]
The Magic School Lussid exist in Time and Space Rift.
The perfect TS Engine chose the new boy as a freshman at the school.
Then, the boy meets a mysterious girl while searching for the secrets of the TS Engine.
Her name is Moriarty.
A girl who has lost most of her memory and concealed her sorrow.
The boy promises to the girl that he will find her memory. Then, they begin the adventure across the parallel worlds.
[Game Features]
■ 'Sidian' charming and unique characters ■
High-quality card illustrations drawn by leading illustrators.
You can meet more than 900 different kinds of Sidians through adventure.
■ It makes your ears happy! Sweet and charming voice. ■
The characters' charms are reflected in their voices.
Japan's top voice actors participated.
Your emotions get deeper because of voice actors' passionate acting.
■ An interesting battle system that requires a variety of strategies. ■
You can create a team for battle using the various attributes of each Sidian and their own skills.
Organize your must-win strategy for victory.
■ A solid and exciting scenario. ■
An exciting adventure story at the magic school Lussid!
Go into an interesting story with attractive Sidians!
■ Various content! It provides endless fun. ■
Season! Get a new Sidian to visit for a certain period of time.
Exploration! You travel all over the world and make stories.
Circle! You can enjoy more exciting adventures with other users.
Boss Raid Battle! Attack the powerful boss with your colleagues in the circle.
Mileage! Compete with other users and get plenty of items.
Special Lesson! Get a new Sidian through a new story.
Student Body Election! Vote for your favorite Sidian and get rewarded.
Gather the Sidians. It's full of content that stimulates your desire to collect.
Right now. Go on an adventure to the magic school Lussid.
The Best Magic School in the Universe! An exciting story about them.
The Magic School Lussid exist in Time and Space Rift.
The perfect TS Engine chose the new boy as a freshman at the school.
Then, the boy meets a mysterious girl while searching for the secrets of the TS Engine.
Her name is Moriarty.
A girl who has lost most of her memory and concealed her sorrow.
The boy promises to the girl that he will find her memory. Then, they begin the adventure across the parallel worlds.
[Game Features]
■ 'Sidian' charming and unique characters ■
High-quality card illustrations drawn by leading illustrators.
You can meet more than 900 different kinds of Sidians through adventure.
■ It makes your ears happy! Sweet and charming voice. ■
The characters' charms are reflected in their voices.
Japan's top voice actors participated.
Your emotions get deeper because of voice actors' passionate acting.
■ An interesting battle system that requires a variety of strategies. ■
You can create a team for battle using the various attributes of each Sidian and their own skills.
Organize your must-win strategy for victory.
■ A solid and exciting scenario. ■
An exciting adventure story at the magic school Lussid!
Go into an interesting story with attractive Sidians!
■ Various content! It provides endless fun. ■
Season! Get a new Sidian to visit for a certain period of time.
Exploration! You travel all over the world and make stories.
Circle! You can enjoy more exciting adventures with other users.
Boss Raid Battle! Attack the powerful boss with your colleagues in the circle.
Mileage! Compete with other users and get plenty of items.
Special Lesson! Get a new Sidian through a new story.
Student Body Election! Vote for your favorite Sidian and get rewarded.
Gather the Sidians. It's full of content that stimulates your desire to collect.
Right now. Go on an adventure to the magic school Lussid.
The Best Magic School in the Universe! An exciting story about them.
Are these done yet?
Last evaluated Jun 24, 2026
Something about this evaluation looks wrong Report illegal or harmful content