Single-player games like 孤岛海妖 The Sea-demon
Below are 9 single-player Steam games similar to 孤岛海妖 The Sea-demon, 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 孤岛海妖 The Sea-demon page.
Ranked picks
- 1

Realization
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie with 孤岛海妖 The Sea-demon.
A self-staged arson at a sales center drags you into the murder case of a female sales agent. With both your career and life in shambles, you must find a way to clear your name. The path to the truth is fraught with danger. Can you rise from this abyss and reclaim the reality you once envisioned?
- 2

The Chrono Jotter
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie with 孤岛海妖 The Sea-demon.
Rewind time to save your girlfriend in a twisted high school death game. A gripping yuri visual novel: Investigate brutal murders, unravel psychological horrors, and fight for a forbidden love that defies death itself.
- 3

迷雾之夏-The Vigilant Villa
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie and Casual with 孤岛海妖 The Sea-demon.
The Vigilant Villa is a plots-oriented, texts-based AVG adventure game inheriting the classic “A locked room mystery" story mode. Where the game heads towards is completely decided by player’s own deductions and choices.
- 4

精神病大王花 Flowering Abyss
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie with 孤岛海妖 The Sea-demon.
话题作《精神病大王花》重制作品。 追求精神病少女们的恋爱游戏,你能活到最后吗?
- 5

Flowers -Le volume sur printemps-
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Casual with 孤岛海妖 The Sea-demon.
Suoh Shirahane, a shy girl with a mysterious past, will begin her first year of high school at Saint Angraecum Academy, where she hopes to find a new beginning. She will navigate friendships and mysteries at her new school, and discovers that love can come in many forms.
- 6

Coffee flavor of love 咖啡甜恋
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie and Casual with 孤岛海妖 The Sea-demon.
Sweet love begins in the coffee shop. Office romances of coffee shop employees. This is a visual novel game with two endings.
- 7

南栀 Unwavering love
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie with 孤岛海妖 The Sea-demon.
《南栀》是一款百合向视觉小说游戏,讲述了在前作(夜永 Eternal Love)剧情发生一年半之后,聆花女子学院中的少女们成长的故事。
- 8

恋爱绮谭 不存在的真相
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Casual with 孤岛海妖 The Sea-demon.
《恋爱绮谭~不存在的真相~》是一款文字冒险游戏。 初到江城的顾唯,意外成为了一起社会新闻的主人公。凶险的都市中,他需要在混乱的舆论和虚假的情报中找到唯一的真相,也需要在两名各有千秋的少女间完成自我的抉择。秋去冬来,覆盖城市的厚厚积雪下,究竟掩藏着什么样的秘密......
- 9

再见断刀
Single-player alternative to 孤岛海妖 The Sea-demon — playable solo, no multiplayer required. Shares Indie with 孤岛海妖 The Sea-demon.
古风悬疑推理AVG《再见断刀》——在与世隔绝的山庄之中,接二连三地发生了骇人命案。只有通过细致入微的调查,抽丝剥茧的推理,才能定一个是非清白,还一个天理公道。 然而,在逐渐浮出水面的真相之下,似乎还有暗流涌动……