Single-player games like Abnormal1999:SU - Unlocking the 4th Dimension
Below are 16 single-player Steam games similar to Abnormal1999:SU - Unlocking the 4th Dimension, 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 Abnormal1999:SU - Unlocking the 4th Dimension page.
Ranked picks
- 1
With in the Obscurity
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
A first-person perspective mystery puzzle-solving game where players immerse themselves in the role of characters involved in each episode's abnormal event to uncover the truth. The plan is to release 1 episodes per month, totaling 6 episodes per season.
- 2
Escape Everlit
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
A narrative-driven sci-fi mystery. Switch between four playable protagonists trapped in an island mansion to explore, investigate, piece together clues from their mysterious past, and uncover the truth behind their predicament.
- 3
Endless
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
《时无烬》是一款时光穿梭的冒险类剧情解谜游戏。玩家通过操作主角解谜收集线索和乘客互动，逐渐揭开他们的故事，解救船上的人们。但船难的真相似乎远没有那么简单，这背后到底隐藏着什么？是灵异事件？亦或是.....
- 4
Rubbings
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
《诡拓》是一款中式民俗微恐风的悬疑推理游戏。你将扮演一名民俗杂志编辑，根据匿名信件中的拓片线索，深入封闭、神秘的睖睁村，这里多年来流传着失踪旅人和诡异祭祀的传说。通过亲历村志中的诡异故事，并在村庄中展开调查，你将逐步揭开埋藏数十年的真相。
- 5
Silent Love
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
This is a terrorist decryption adventure game that took place in 1913.
- 6
The Silent Age
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
Experience a post-apocalyptic world like never before in The Silent Age, a thrilling point-and-click adventure game. Use time travel to unravel the mystery behind humanity's disappearance and save the world from extinction. Start your journey now!
- 7
Orten Was The Case
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
Orten Was The Case - A free movement puzzle/adventure game where you play as a youngster stuck in a time loop with the simple task of saving the world from literal destruction.
- 8
Return to Shironagasu Island
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required.
A mystery adventure game and visual novel set on solitary Shironagasu Island. Discover its secrets, solve its mysteries, and escape from the ominous island!
- 9
Abnormal1999:Sector 49
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required.
Abnormal1999: Sector 49 is a challenging mystery puzzle game. You play as Sam, searching for your daughter in the abandoned Sector 49. Collect 10 consciousnesses to open the portal and escape.
- 10
MeiQi 2019
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
The "Meiqi" series is a plot-oriented puzzle game. This collection is the beginning of the Meiqi Series, including all 6 episodes of the first season, namely Meiqi/Tingting/Sifeng/Aiguo/Cuilan/Jasmine, This is the entrance to the little universe of Sun Meiqi's mysterious case.
- 11
Hundreds of Mysteries:Wendy's Home2
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
Every case has a story behind it! You need to find and collect clues in the scene and reason at every level to find the truth. The clues can be associated or cross-layered.
- 12
MeiQi 2022
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
At the end of 1990, there was a murder in Changzhuang community. Both mother and son were killed. The case is full of doubts. According to the clues, you plan to visit the murder scene alone at night, search for evidence, obtain clues, and crack the truth.
- 13
孙美琪疑案:雨儿胡同
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
1992年7月16日，后海湖边槐树下，发现一名女尸，衣着整齐坐在槐树下，颈部缠绕着一根吉他弦，为主要致死原因，双手有被吉他弦勒伤的痕迹，初步判定为自杀。死亡时间约凌晨2点左右，死者叫关雨珑。林警官，请你在错综复杂的线索中，寻找凶案的真相。
- 14
MeiQi:Story
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
Collect new clues and solve new cases in the latest game in the "Meiqi" series. The new chapter "Story" takes place after the pendulum case. Liu Qingchun mustered the courage to walk into Wang Yong's house.
- 15
Project:EagleBeak
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
Project:EagleBeak is a mix of multiple modes of science fiction adventure game.You will play as a prisoner called ANN,imprisoned in an alien laboratory,find a way out of this matrix like laboratory.
- 16
MeiQi 2020
Single-player alternative to Abnormal1999:SU - Unlocking the 4th Dimension — playable solo, no multiplayer required. Shares Indie with Abnormal1999:SU - Unlocking the 4th Dimension.
The MeiQi Series is an episodic mystery game. This collection contains all of Season2/3/4 and 5,which will be released in 2020,and a special episode. In total there are 25 chapters.