Games like Reaper's Odyssey
Games like Reaper's Odyssey include Warhammer 40,000: Chaos Gate - Daemonhunters, XCOM: Enemy Unknown, Battle Brothers, The Banner Saga, and The Last Spell. We matched them by the tags players give Reaper's Odyssey on Steam (Turn-Based Strategy, Tactical, Medieval, Replay Value, and Choose Your Own Adventure): closest matches first, and among equally close ones the better-known games.

Warhammer 40,000: Chaos Gate - Daemonhunters
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

XCOM: Enemy Unknown
Shared: Turn-Based Strategy · Tactical · Replay Value

Battle Brothers
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

The Banner Saga
Shared: Turn-Based Strategy · Tactical RPG · Choices Matter

The Last Spell
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

STAR WARS Zero Company™
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

Legends of Eisenwald
Shared: Choices Matter · Tactical RPG · Choose Your Own Adventure

Marvels Midnight Suns Digital Edition
Shared: Turn-Based Strategy · Turn-Based Tactics · Tactical RPG

Warhammer 40,000: Rogue Trader
Shared: Turn-Based Strategy · Choices Matter · RPG

Jagged Alliance 3
Shared: Tactical · Turn-Based Strategy · Turn-Based Tactics

FINAL FANTASY TACTICS - The Ivalice Chronicles
Shared: Turn-Based Strategy · Medieval · Tactical RPG

MENACE
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

King's Bounty II
Shared: Turn-Based Strategy · Medieval · Tactical

Wildermyth
Shared: Choices Matter · Turn-Based Strategy · Turn-Based Tactics

The Age of Decadence
Shared: Choices Matter · Turn-Based Strategy · Multiple Endings

Tactical Breach Wizards
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

Songs of Conquest
Shared: Tactical · Turn-Based Strategy · Turn-Based Tactics

XCOM®: Chimera Squad
Shared: Turn-Based Strategy · Tactical · Turn-Based Tactics

Cyber Knights: Flashpoint
Shared: Turn-Based Strategy · Replay Value · Turn-Based Tactics

XCOM 2
Shared: Tactical · Turn-Based Tactics · Character Customization

King Arthur: Knight's Tale
Shared: Tactical RPG · Turn-Based Tactics · Choices Matter

The Life and Suffering of Sir Brante
Shared: Choices Matter · Choose Your Own Adventure · Medieval

Those Who Rule
Shared: Turn-Based Strategy · Tactical RPG · Turn-Based Tactics

Undertale
Shared: Choices Matter · Multiple Endings · Replay Value