24 games ranked by how much the tags Steam players vote on them overlap with Guards'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: Turn-Based, Turn-Based Tactics, Strategy, Tactical, Fantasy, Tower Defense.

1·MASSIVE CHALICE
92% match · Turn-Based, Turn-Based Tactics
73% of 1,912 reviews positive

2·Rebel Cops
88% match · Turn-Based, Strategy
75% of 1,851 reviews positive

3·Gears Tactics
88% match · Strategy, Turn-Based
75% of 7,786 reviews positive

4·Antisquad
86% match · Turn-Based, Strategy
52% of 298 reviews positive

5·Blackguards
85% match · Turn-Based, Tactical
62% of 3,922 reviews positive

6·Jagged Alliance Flashback
85% match · Turn-Based, Strategy
47% of 777 reviews positive

7·Disciples Sacred Lands Gold
85% match · Turn-Based, Strategy
86% of 420 reviews positive · 5 playing

8·Clatter
85% match · Strategy, Turn-Based
83% of 1,270 reviews positive

9·Arma Tactics
85% match · Turn-Based, Strategy
32% of 996 reviews positive

10·Skyshine's BEDLAM
84% match · Turn-Based, Strategy
59% of 879 reviews positive

11·Cubetractor
84% match · Strategy, Tower Defense
74% of 482 reviews positive

12·Fantasy Wars
83% match · Turn-Based, Strategy
86% of 319 reviews positive

13·Might & Magic: Clash of Heroes
83% match · Turn-Based, Strategy
85% of 2,592 reviews positive

14·Rise of the Ancients
83% match · Strategy, Tower Defense
43% of 351 reviews positive

15·Future Wars
83% match · Strategy, Turn-Based
30% of 309 reviews positive

16·Abyss Raiders: Uncharted
82% match · Tower Defense, Strategy
42% of 179 reviews positive

17·Battle Time
82% match · Strategy, Tower Defense
77% of 224 reviews positive

18·Commando Jack
82% match · Tower Defense, Strategy
50% of 563 reviews positive

19·Might & Magic: Heroes VI
82% match · Turn-Based, Strategy
48% of 9,286 reviews positive

20·One Troll Army
82% match · Strategy, Tower Defense
86% of 1,497 reviews positive

21·Hero Academy
82% match · Turn-Based, Strategy
69% of 756 reviews positive

22·Magic Quest
82% match · Tower Defense, Strategy
67% of 58 reviews positive

23·Jagged Alliance 2 - Wildfire
81% match · Strategy, Turn-Based
80% of 1,943 reviews positive

24·Hitman GO: Definitive Edition
81% match · Turn-Based, Strategy
85% of 2,412 reviews positive
The closest matches to Guards on Steam are MASSIVE CHALICE, Rebel Cops, Gears Tactics, Antisquad, Blackguards. They rank highest because their Steam community tags overlap most with Guards's, and shared tags include Turn-Based, Turn-Based Tactics, Strategy.
Every game is described by the tags Steam players vote on it. Rare, specific tags such as Turn-Based, Turn-Based Tactics, Strategy count far more than catch-all ones like "Indie" or "Singleplayer", and each game is scored on how closely its whole tag profile matches Guards's. Popularity never affects the ranking.