Games like space vanguard
Games like space vanguard include Caster, Plebby Quest: The Crusades, UFO 50, Notes of Soul, and Mount & Blade II: Bannerlord. We matched them by the tags players give space vanguard on Steam (Indie, Casual, Action, Adventure, and RPG): closest matches first, and among equally close ones the better-known games.

Caster
Shared: Indie · Action · Adventure

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

UFO 50
Shared: Indie · Action · Strategy

Notes of Soul
Shared: Action · Indie · Adventure

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

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

SMITE 2
Shared: Action · Adventure · Strategy

Dead Age
Shared: RPG · Strategy · Casual

Overdungeon
Shared: Indie · Casual · Strategy

Juicy Realm
Shared: Indie · Action · Adventure

Cat Quest
Shared: Adventure · RPG · Action

Home Behind
Shared: Indie · Adventure · Casual

Han Xiongnu Wars
Shared: Action · Indie · RPG

Lost
Shared: Casual · Indie · Adventure

G2 Fighter / 基因特工
Shared: Indie · Action · Adventure

Idle Champions of the Forgotten Realms
Shared: Strategy · Adventure · Indie

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

Town of Salem
Shared: Indie · Strategy · Casual

Mount & Blade: Warband
Shared: RPG · Strategy · Action

Achievement Clicker
Shared: Casual · Indie · Action

Bladed fury
Shared: Indie · Action · Adventure

Melvor Idle
Shared: Casual · Indie · RPG

Fantasy of Expedition
Shared: Indie · RPG · Action