Games like Echoes
Games like Echoes include Stoneshard, Elin, Shattered Pixel Dungeon, Shiren the Wanderer: The Tower of Fortune and the Dice of Fate, and DELTARUNE. We matched them by the tags players give Echoes on Steam (RPG, Roguelike, Mystery Dungeon, Traditional Roguelike, and 2D): closest matches first, and among equally close ones the better-known games.

Stoneshard
Shared: RPG · Roguelike · Pixel Graphics

Elin
Shared: Roguelike · RPG · Pixel Graphics

Shattered Pixel Dungeon
Shared: Roguelike · Traditional Roguelike · RPG

Shiren the Wanderer: The Tower of Fortune and the Dice of Fate
Shared: Roguelike · RPG · Mystery Dungeon

DELTARUNE
Shared: RPG · Pixel Graphics · 2D

Vampire Survivors
Shared: Pixel Graphics · 2D · Roguelike

Rogue Legacy
Shared: Roguelike · RPG · 2D

Tales of Maj'Eyal
Shared: Roguelike · Traditional Roguelike · RPG

Crypt of the NecroDancer
Shared: Roguelike · Pixel Graphics · RPG

One Way Heroics
Shared: Mystery Dungeon · Traditional Roguelike · Roguelike

Tangledeep
Shared: Traditional Roguelike · Mystery Dungeon · RPG

CrossCode
Shared: RPG · Pixel Graphics · Female Protagonist

Path of Achra
Shared: Roguelike · RPG · Traditional Roguelike

The Binding of Isaac: Rebirth
Shared: Roguelike · Pixel Graphics · 2D

The Mageseeker: A League of Legends Story™
Shared: RPG · 2D · Pixel Graphics

Dungeons of Dredmor
Shared: Roguelike · RPG · Traditional Roguelike

Dead Cells
Shared: Roguelike · 2D · Pixel Graphics

Mystery Chronicle: One Way Heroics
Shared: RPG · Roguelike · Mystery Dungeon

Touhou Genso Wanderer -Reloaded-
Shared: RPG · Roguelike · Mystery Dungeon

Child of Light
Shared: RPG · Fantasy · 2D

ENDER MAGNOLIA: Bloom in the Mist
Shared: 2D · RPG · Female Protagonist

Hero Siege
Shared: RPG · Pixel Graphics · Roguelike

Angels of Death
Shared: RPG · Pixel Graphics · 2D

Skul: The Hero Slayer
Shared: Roguelike · Pixel Graphics · 2D