SU
SU is a 2.5D deduction puzzle game. The submarine Nautilus suffers a mechanical failure during its voyage. Dr. Pierre investigates and finds anomalies in every area. Explore the deep blue depths, follow Dr. Pierre as he unravels the secrets of the Nautilus.
Offers
What are keyshops?Multipacks (1)
About SU
Story Background:
During its voyage, the submarine suddenly experienced a mechanical failure. Dr. Pierre hurriedly began investigating, only to find abnormal intrusions in every area.
Investigate cases in the azure abyss, and follow Dr. Pierre to uncover the secrets of the Nautilus.
Immerse yourself in the eerie atmosphere of the Nautilus, filled with secrets and unsettling anomalies.
Experience 2.5D deduction + puzzle gameplay, combine your observation skills to solve problems and navigate through various cabins.
Many anomalies are hidden in the submarine, related to the time vortex. Can you unlock the secrets of time and space and escape the submarine?
1866
Dr. Pierre, the owner of the Nautilus, and his seven sailors accidentally salvaged a "compass" during their voyage.
This compass allowed him to glimpse his true position in the universe. It also caused the Nautilus to sink into a time vortex.
2998
"Su" is a student from a future city. During an underwater trip, she encountered an ancient submarine trapped in time and space.
Su entered the submarine to explore but was captured by the time vortex into another unknown space-time.
Gameplay:
Players play as Dr. Pierre.
Interacting with items marked with time stamps can penetrate time to obtain more clues.
Explore interesting "time wormholes" and various props to uncover the truth of the story.
Game details
Game details
Age ratings
Game modes
Languages
Audio & text: English
Text only: Japanese, Simplified Chinese, Traditional Chinese
Features
SU price history
Lowest tracked price: €1.49 (Jul 7, 2026) · current best: €2.99.
SU reviews
75% positive reviews all-time.
SU — frequently asked questions
Where can I buy SU at the cheapest price?
Right now the cheapest offer for SU is €2.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
What is the lowest price SU has ever been?
The lowest price KingsPrice has tracked for SU is €1.49 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
How can I get SU at a discount?
Create a free price alert on this page and KingsPrice will email you when SU drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- Requires a 64-bit processor and operating system
- OS: Windows 10 or higher
- Processor: Intel Core i5-2500K or AMD Athlon X4 740 (or equivalent)
- Memory: 8 GB RAM
- Graphics: GeForce GTX 660 (2048 MB) or Radeon R9 285 (2048 MB) - Integrated GPUs may work but are not supported.
- DirectX: Version 11
- Storage: 6 GB available space
Recommended
- Requires a 64-bit processor and operating system
