Games like Apollo4x
Games like Apollo4x include Plebby Quest: The Crusades, Mount & Blade II: Bannerlord, Total War: WARHAMMER, Game Dev Tycoon, and The Scroll of Taiwu : Beyond The Dome. We matched them by the tags players give Apollo4x on Steam (Strategy, Indie, Casual, Simulation, and Grand Strategy): closest matches first, and among equally close ones the better-known games.

Plebby Quest: The Crusades
Shared: Strategy · Indie · Casual

Mount & Blade II: Bannerlord
Shared: Strategy · RPG · Simulation

Total War: WARHAMMER
Shared: Strategy · Simulation · RPG

Game Dev Tycoon
Shared: Indie · Strategy · Simulation

The Scroll of Taiwu : Beyond The Dome
Shared: Strategy · Indie · RPG

Caster
Shared: Indie · Casual · Strategy

Plague Inc: Evolved
Shared: Strategy · Indie · Simulation

Crusader Kings III
Shared: Strategy · Simulation · Grand Strategy

Home Behind
Shared: Indie · Casual · Strategy

Dead Age
Shared: Strategy · RPG · Casual

Mini Motorways
Shared: Strategy · Casual · Simulation

Ultimate Epic Battle Simulator 2
Shared: Strategy · Simulation · Action

Achievement Clicker
Shared: Casual · Indie · Strategy

Europa Universalis IV
Shared: Strategy · Grand Strategy · Simulation

Rock 'N' Roll Defense
Shared: Strategy · Casual · Indie

Crusader Kings II
Shared: Strategy · Grand Strategy · Simulation

Stellaris
Shared: Strategy · Grand Strategy · Simulation

Heroes of Might and Magic: Olden Era
Shared: Strategy · Grand Strategy · Simulation

Totally Accurate Battle Simulator
Shared: Simulation · Strategy · Indie

Sid Meier’s Civilization® VI
Shared: Strategy · Grand Strategy · Simulation

Mountain
Shared: Indie · Simulation · Casual

Dragon Cliff
Shared: Strategy · RPG · Casual

Overdungeon
Shared: Strategy · Indie · Casual

UFO 50
Shared: Indie · Strategy · Action