24 games ranked by how much the tags Steam players vote on them overlap with Alder's Blood: Prologue's. A rare tag counts for far more than one that sits on half the store, and popularity never moves a game up.
What they share most: Lovecraftian, Turn-Based Combat, Dark Fantasy, Rogue-like, Turn-Based Tactics, Turn-Based Strategy.

1·Darkest Dungeon®
89% match · Lovecraftian, Turn-Based Combat
92% of 162,876 reviews positive · 2,686 playing

2·Clatter
87% match · Turn-Based Tactics, Turn-Based Combat
83% of 1,270 reviews positive

3·Mutant Year Zero: Road to Eden
86% match · Turn-Based Combat, Turn-Based Tactics
90% of 20,585 reviews positive

4·Iratus: Lord of the Dead
86% match · Turn-Based Combat, Dark Fantasy
86% of 8,275 reviews positive

5·Othercide
86% match · Turn-Based Tactics, Turn-Based Combat
82% of 5,319 reviews positive

6·RAM Pressure
85% match · Turn-Based Tactics, Turn-Based
47% of 984 reviews positive

7·Immortal Empire
85% match · Turn-Based Tactics, Free to Play
72% of 310 reviews positive

8·Warbanners
84% match · Turn-Based Tactics, Turn-Based Combat
71% of 615 reviews positive

9·Darkest Dungeon® II
84% match · Lovecraftian, Turn-Based Tactics
75% of 27,084 reviews positive

10·Call of Cthulhu: The Wasted Land
84% match · Lovecraftian, Turn-Based
68% of 194 reviews positive

11·Blackguards 2
83% match · Turn-Based, Turn-Based Combat
67% of 1,316 reviews positive

12·The Banner Saga 3
83% match · Turn-Based Tactics, Turn-Based Combat
78% of 3,111 reviews positive

13·Druidstone: The Secret of the Menhir Forest
83% match · Turn-Based, Turn-Based Tactics
83% of 1,398 reviews positive

14·Dungeon Rushers
83% match · Turn-Based Combat, Turn-Based Tactics
62% of 1,235 reviews positive

15·The Last Spell
83% match · Turn-Based Tactics, Turn-Based Combat
91% of 13,771 reviews positive

16·Bionic Dues
82% match · Rogue-like, Turn-Based
75% of 996 reviews positive

17·Wanna Survive
82% match · Turn-Based Tactics, Turn-Based Strategy
93% of 305 reviews positive

18·Blackguards
82% match · Turn-Based, Tactical
62% of 3,922 reviews positive

19·Skulls of the Shogun
82% match · Turn-Based Strategy, Turn-Based
90% of 870 reviews positive

20·Agent Awesome
82% match · Turn-Based Combat, Turn-Based Tactics
63% of 949 reviews positive

21·The Dungeon Of Naheulbeuk: The Amulet Of Chaos
82% match · Turn-Based Tactics, Turn-Based
87% of 8,103 reviews positive

22·Jagged Alliance 3
81% match · Turn-Based Tactics, Turn-Based Combat
88% of 15,109 reviews positive

23·The Storm Guard: Darkness is Coming
81% match · Turn-Based Tactics, Turn-Based Combat
80% of 168 reviews positive

24·Gears Tactics
81% match · Turn-Based Tactics, Turn-Based
75% of 7,786 reviews positive
The closest matches to Alder's Blood: Prologue on Steam are Darkest Dungeon®, Clatter, Mutant Year Zero: Road to Eden, Iratus: Lord of the Dead, Othercide. They rank highest because their Steam community tags overlap most with Alder's Blood: Prologue's, and shared tags include Lovecraftian, Turn-Based Combat, Dark Fantasy.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Lovecraftian, Turn-Based Combat, Dark Fantasy count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Alder's Blood: Prologue's. Popularity never affects the ranking.