Games like Underground Miner
Games like Underground Miner include Hollow Knight, Hollow Knight: Silksong, Thank Goodness You're Here!, FEZ, and Celeste. We matched them by the tags players give Underground Miner on Steam (Singleplayer, 2D, Indie, Mining, and Exploration): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: 2D · Singleplayer · Indie

Hollow Knight: Silksong
Shared: Indie · 2D · Singleplayer

Thank Goodness You're Here!
Shared: Exploration · Hand-drawn · Indie

FEZ
Shared: Indie · Singleplayer · Exploration

Celeste
Shared: Indie · Singleplayer · 2D

SANABI
Shared: Singleplayer · 2D · Indie

Super Meat Boy
Shared: Indie · 2D · Singleplayer

Vampire Survivors
Shared: 2D · Singleplayer · Indie

Five Nights at Freddy's: Into the Pit
Shared: 2D · Singleplayer · Exploration

Shovel Knight: Treasure Trove
Shared: Indie · 2D · Singleplayer

To The Core
Shared: 2D · Casual · Indie

GRIS
Shared: Indie · Singleplayer · Hand-drawn

DAVE THE DIVER
Shared: Singleplayer · Casual · Exploration

Melvor Idle
Shared: Singleplayer · Indie · Casual

Reventure
Shared: Indie · 2D · Singleplayer

Rain World
Shared: Indie · Exploration · 2D

VVVVVV
Shared: Indie · 2D · Singleplayer

Gorogoa
Shared: Indie · Singleplayer · Hand-drawn

Pizza Tower
Shared: Indie · Singleplayer · 2D Platformer

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

UFO 50
Shared: Indie · 2D · Retro

Razortron 2000
Shared: Indie · Casual · 2D

Terraria
Shared: 2D · Exploration · Indie

DLC Quest
Shared: Indie · 2D · Singleplayer