Games like Vault of the Void
Games like Vault of the Void include Slay the Spire, Slay the Spire 2, Balatro, Monster Train, and Dicey Dungeons. We matched them by the tags players give Vault of the Void on Steam (Indie, Roguelike Deckbuilder, Deckbuilding, Choices Matter, and Strategy): closest matches first, and among equally close ones the better-known games.

Slay the Spire
Shared: Roguelike Deckbuilder · Deckbuilding · Card Battler

Slay the Spire 2
Shared: Deckbuilding · Roguelike Deckbuilder · Card Game

Balatro
Shared: Roguelike Deckbuilder · Deckbuilding · Card Game

Monster Train
Shared: Deckbuilding · Card Battler · Card Game

Dicey Dungeons
Shared: Roguelike Deckbuilder · Deckbuilding · Indie

9 Kings
Shared: Strategy · Deckbuilding · Roguelike Deckbuilder

Wildfrost
Shared: Roguelike Deckbuilder · Card Battler · Deckbuilding

Inscryption
Shared: Deckbuilding · Card Battler · Card Game

Die in the Dungeon
Shared: Deckbuilding · Roguelike Deckbuilder · Strategy

Griftlands
Shared: Deckbuilding · Card Battler · Choices Matter

Dungeons & Degenerate Gamblers
Shared: Roguelike Deckbuilder · Deckbuilding · Strategy

Loop Hero
Shared: Deckbuilding · Indie · Choices Matter

StarVaders
Shared: Roguelike Deckbuilder · Deckbuilding · Roguelite

Vampire Crawlers: The Turbo Wildcard from Vampire Survivors
Shared: Deckbuilding · Card Battler · Strategy

DICEOMANCER
Shared: Roguelike Deckbuilder · Strategy · Deckbuilding

Chrono Ark
Shared: Roguelike Deckbuilder · Indie · Strategy

Super Fantasy Kingdom
Shared: Strategy · Deckbuilding · Roguelike Deckbuilder

As We Descend
Shared: Roguelike Deckbuilder · Deckbuilding · Card Battler

Across the Obelisk
Shared: Roguelike Deckbuilder · Deckbuilding · Card Game

Overdungeon
Shared: Indie · Roguelike Deckbuilder · Strategy

Commander Quest
Shared: Roguelike Deckbuilder · Strategy · Deckbuilding

Breachway
Shared: Strategy · Deckbuilding · Roguelike Deckbuilder

Luck be a Landlord
Shared: Roguelike Deckbuilder · Deckbuilding · Strategy

Roguebook
Shared: Indie · Deckbuilding · Card Game