Single-player games like 15 Days
Below are 13 single-player Steam games similar to 15 Days, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like 15 Days page.
Ranked picks
- 1
Set the Record Straight
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
A 1998-set deduction game. Trawl a period internet for documents, photographs, and dead ends, then correct the official record: who really wrote, played, drew, or built it. An anthology of credit fraud, set straight one careful search at a time.
- 2
武儒绘卷 - 天地奇缘
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
"Wuru Painting Scroll - Romance of Heaven and Earth" is a development game with a mythological background. Players can formulate their own development routes in the game, or defend their homeland and the country, fight in all directions, or seek wisdom and courage.
- 3
Ken Follett's The Pillars of the Earth
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
12th century, England: In a time of poverty and war, a small town begins the construction of a cathedral to claim wealth and safety for its people. In their struggle to survive, lives and destinies intertwine. Based on Ken Follett's world-bestseller ‘The Pillars of the Earth’.
- 4
1953 - KGB Unleashed
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
Developed by Phantomery Interactive, 1953 – KGB Unleashed is a tense and atmospheric First Person Adventure set deep within the bowels of a Soviet bunker during the Cold War. Players must uncover the dark and horrifc secrets buried within, fighting their own paranoia along the way as well as the possibility of all-too-real terrors within...
- 5
Playing History 2 - Slave Trade
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
Travel back in time and witness the horrors of slave trade firsthand. You will be working as young slave steward on a ship crossing the Atlantic. You are to serve the captain and be his eyes and ears. What do you do, when you realize that your own sister has been captured by the slave traders?
- 6
A Golden Wake
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
The rise and fall story of a real estate agent in 1920s Miami. Based on historical events. From Francisco González, creator of the Ben Jordan: Paranormal Investigator series, Shardlight, and Lamplight City.
- 7
Dangerous High School Girls in Trouble!™
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Casual with 15 Days.
"Well behaved women seldom make history." - Laurel Thatcher Ulrich This is the game where good girls get better by being bad! In the 1920s, young women had a chance to change society--by misbehaving. Gather a gang of girls. Explore. Battle petty townsfolk with quick, naughty games: Fib, Flirt, Taunt...
- 8
The Last Express Gold Edition
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Adventure with 15 Days.
Step aboard the 1914 Orient Express in this award-winning mystery adventure from Prince of Persia creator Jordan Mechner. Described as one of the best adventure games of all time, The Last Express is an intrigue-filled adventure set aboard the luxurious Orient Express.
- 9
The Moment of Silence
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
The Moment of Silence is a classic point-and-click 3rd person adventure game set in New York City in 2044. Players step into the role of Peter Wright, an advertising executive currently heading up the Government's 'Freedom of Speech' campaign.
- 10
The Mystery of the Druids
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Adventure with 15 Days.
In this classic adventure, you will take on the role of young Scotland Yard Detective Brent Halligan, assigned to solve the puzzle surrounding a mysterious order of Druids and a series of gruesome murders. It appears that the neo-Druids are conducting ritual killings to conjure up sinister forces.
- 11
Earth Overclocked
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
Earth Overclocked is a frantic rogue-lite adventure starring a scientist who is terrible at making time machines, but great at blasting bad guys. Use a diverse selection of weapons to fight off monsters while searching for pieces of your time machine in randomly generated environments.
- 12
Boti: Byteland Overclocked
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
Jump, Dash, Slide! Dive into a classic 3D platformer experience with Boti: Byteland Overclocked. Explore the stylized insides of a computer as a determined data robot and save Byteland from an ominous threat. Play solo or team up with a friend in seamless co-op.
- 13
Overclocked: A History of Violence
Single-player alternative to 15 Days — playable solo, no multiplayer required. Shares Indie and Adventure with 15 Days.
Set against the backdrop of a catastrophic thunderstorm raging over New York City, Overclocked explores an archetypical, yet actual condition of mankind: violence. This psychological thriller mixes frightening fictional thriller elements using innovative narrative structures.