Games like Warmada
Games like Warmada include Between the Stars, 鬼谷八荒 Tale of Immortal, Space Pirates And Zombies 2, Rebel Galaxy, and Deliver Us The Moon. We matched them by the tags players give Warmada on Steam (Adventure, Indie, Simulation, RPG, and Space): closest matches first, and among equally close ones the better-known games.

Between the Stars
Shared: RPG · Space · Simulation

鬼谷八荒 Tale of Immortal
Shared: Simulation · RPG · Adventure

Space Pirates And Zombies 2
Shared: Indie · Space · RPG

Rebel Galaxy
Shared: Space · Adventure · RPG

Deliver Us The Moon
Shared: Adventure · Indie · Space

Space Rangers HD: A War Apart
Shared: Adventure · RPG · Space

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

Endless Sky
Shared: Space · Simulation · Adventure

Graveyard Keeper
Shared: Simulation · RPG · Indie

Home Behind
Shared: Adventure · Indie · RPG

SPORE™ Galactic Adventures
Shared: Simulation · Adventure · Space

Kerbal Space Program
Shared: Simulation · Space · Indie

Home Behind 2
Shared: Adventure · RPG · Indie

Hand Simulator: Survival
Shared: Adventure · Simulation · RPG

EVE Online
Shared: Adventure · Simulation · Space

OMON Simulator
Shared: Simulation · Indie · Adventure

Warhammer 40,000: Inquisitor - Martyr
Shared: RPG · Adventure · Indie

Trailmakers
Shared: Space · Adventure · Indie

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

Objects in Space
Shared: Indie · Simulation · Adventure

Celestial Command
Shared: Indie · Simulation · Space

3030 Deathwar Redux - A Space Odyssey
Shared: Adventure · Indie · Simulation

Plebby Quest: The Crusades
Shared: Indie · Adventure · RPG

Wobbly Life
Shared: Adventure · Simulation · Indie