Games like Traps N' Gemstones
Games like Traps N' Gemstones include Hollow Knight, Dust: An Elysian Tail, Hollow Knight: Silksong, Ori and the Will of the Wisps, and Gato Roboto. We matched them by the tags players give Traps N' Gemstones on Steam (Adventure, Indie, Casual, Action, and Metroidvania): closest matches first, and among equally close ones the better-known games.

Hollow Knight
Shared: Metroidvania · Platformer · Indie

Dust: An Elysian Tail
Shared: Action · Indie · Adventure

Hollow Knight: Silksong
Shared: Indie · Metroidvania · Adventure

Ori and the Will of the Wisps
Shared: Metroidvania · Adventure · Platformer

Gato Roboto
Shared: Indie · Adventure · Action

Rogue Legacy 2
Shared: Indie · Metroidvania · Action

Axiom Verge
Shared: Indie · Metroidvania · Action

SteamWorld Dig 2
Shared: Adventure · Indie · Metroidvania

F.I.S.T.: Forged In Shadow Torch
Shared: Adventure · Metroidvania · Action

Pikuniku
Shared: Adventure · Indie · Casual

Shovel Knight: Treasure Trove
Shared: Indie · Platformer · Adventure

The Messenger
Shared: Metroidvania · Platformer · Retro

Nine Sols
Shared: Metroidvania · Action · Platformer

Wonder Boy: The Dragon's Trap
Shared: Adventure · Action · Indie

Skul: The Hero Slayer
Shared: Indie · Action · Platformer

UnEpic
Shared: Indie · Metroidvania · Action

Monster Boy and the Cursed Kingdom
Shared: Adventure · Indie · Action

Out There Somewhere
Shared: Indie · Adventure · Platformer

Environmental Station Alpha
Shared: Adventure · Indie · Metroidvania

Super Fancy Pants Adventure
Shared: Adventure · Indie · Action

Minimalism
Shared: Indie · Casual · Action

Bloodstained: Curse of the Moon
Shared: Action · Platformer · Retro

BEEP
Shared: Indie · Adventure · Platformer

Dead Cells
Shared: Adventure · Metroidvania · Platformer