Games like Gem Miner TD
Games like Gem Miner TD include Wall World, Balatro, Legend Creatures(传奇生物), The Binding of Isaac: Rebirth, and Legion TD 2 - Multiplayer Tower Defense. We matched them by the tags players give Gem Miner TD on Steam (Tower Defense, Roguelite, Mining, Replay Value, and Strategy): closest matches first, and among equally close ones the better-known games.

Wall World
Shared: Roguelite · Mining · Tower Defense

Balatro
Shared: Strategy · Roguelite · Replay Value

Legend Creatures(传奇生物)
Shared: Roguelite · Strategy · Replay Value

The Binding of Isaac: Rebirth
Shared: Replay Value · Indie · Pixel Graphics

Legion TD 2 - Multiplayer Tower Defense
Shared: Tower Defense · Strategy · Replay Value

Kingdom Rush Frontiers - Tower Defense
Shared: Tower Defense · Strategy · 2D

Dead Cells
Shared: Roguelite · Replay Value · 2D

Dungeon of the ENDLESS™
Shared: Tower Defense · Strategy · Indie

Kingdom Rush - Tower Defense
Shared: Tower Defense · Strategy · 2D

Necrosmith
Shared: Tower Defense · Roguelite · Strategy

Slay the Spire
Shared: Roguelite · Strategy · Replay Value

9 Kings
Shared: Strategy · Auto Battler · Roguelite

Vampire Survivors
Shared: Roguelite · 2D · Pixel Graphics

Wall World 2
Shared: Roguelite · Mining · Tower Defense

Kingdom Rush Origins - Tower Defense
Shared: Tower Defense · Strategy · 2D

Plants vs. Zombies GOTY Edition
Shared: Tower Defense · Strategy · 2D

Bloons TD 6
Shared: Tower Defense · Strategy · Casual

FTL: Faster Than Light
Shared: Strategy · Replay Value · Indie

Heretic's Fork
Shared: Tower Defense · Strategy · Bullet Heaven

Super Fantasy Kingdom
Shared: Strategy · Roguelite · Auto Battler

The King is Watching
Shared: Tower Defense · Strategy · Roguelite

Skul: The Hero Slayer
Shared: Roguelite · Indie · 2D

Megabonk
Shared: Roguelite · Bullet Heaven · Indie

Ratropolis
Shared: Roguelite · Strategy · 2D