Games like Under The Ground
Games like Under The Ground include Notes of Soul, [Chillas Art] Stigmatized Property, Caster, Rock 'N' Roll Defense, and Plebby Quest: The Crusades. We matched them by the tags players give Under The Ground on Steam (Adventure, Indie, Action, Casual, and Strategy): closest matches first, and among equally close ones the better-known games.

Notes of Soul
Shared: Adventure · Action · Horror

[Chillas Art] Stigmatized Property
Shared: Indie · Adventure · Casual

Caster
Shared: Indie · Adventure · Action

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

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

[Chillas Art] The Convenience Store
Shared: Indie · Adventure · Horror

Achievement Clicker
Shared: Indie · Casual · Adventure

Bendy and the Dark Revival
Shared: Action · Adventure · Horror

Pikuniku
Shared: Adventure · Indie · Casual

[Chillas Art] Missing Children
Shared: Indie · Adventure · Casual

SMITE 2
Shared: Action · Adventure · Strategy

UFO 50
Shared: Indie · Action · Adventure

[Chillas Art] Inunaki Tunnel
Shared: Adventure · Indie · Horror

Emily Wants To Play
Shared: Indie · Horror · Action

[Chillas Art] Aka Manto
Shared: Indie · Horror · Action

Mouse (Sneaking)
Shared: Indie · Action · Adventure

RADical ROACH Remastered
Shared: Indie · Action · Adventure

The Hat Man: Shadow Ward
Shared: Indie · Adventure · Horror

BEEP
Shared: Indie · Adventure · Action

Cookie Clicker
Shared: Indie · Casual · Horror

Lost
Shared: Casual · Indie · Adventure

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

The Forest
Shared: Adventure · Horror · Action

Doll Impostor
Shared: Adventure · Action · Strategy