Games like Conquistador Rex
Games like Conquistador Rex include Celeste, SANABI, Super Meat Boy, Hollow Knight, and Trine 2: Complete Story. We matched them by the tags players give Conquistador Rex on Steam (Precision Platformer, 2D Platformer, Souls-like, Old School, and Retro): closest matches first, and among equally close ones the better-known games.

Celeste
Shared: Precision Platformer · 2D Platformer · Platformer

SANABI
Shared: 2D Platformer · Singleplayer · Action-Adventure

Super Meat Boy
Shared: Precision Platformer · 2D Platformer · Platformer

Hollow Knight
Shared: Souls-like · Platformer · Singleplayer

Trine 2: Complete Story
Shared: 2D Platformer · Platformer · Action-Adventure

F.I.S.T.: Forged In Shadow Torch
Shared: 2D Platformer · Platformer · Singleplayer

VVVVVV
Shared: Precision Platformer · 2D Platformer · Platformer

STAR WARS Jedi: Fallen Order™
Shared: Souls-like · Action-Adventure · Platformer

Black Myth: Wukong
Shared: Souls-like · Singleplayer · Action-Adventure

Trine Enchanted Edition
Shared: 2D Platformer · Action-Adventure · Puzzle Platformer

Garbanzo Quest
Shared: 2D Platformer · Precision Platformer · Platformer

Hollow Knight: Silksong
Shared: Souls-like · Platformer · Singleplayer

STAR WARS Jedi: Survivor™
Shared: Souls-like · Singleplayer · Action-Adventure

Planet of Lana
Shared: 2D Platformer · Puzzle Platformer · Platformer

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

INSIDE
Shared: Puzzle Platformer · Singleplayer · 2D Platformer

Leap Year
Shared: Precision Platformer · 2D Platformer · Platformer

Dungeon Escape
Shared: Precision Platformer · 2D Platformer · Retro

Downwell
Shared: Precision Platformer · 2D Platformer · Platformer

Prince of Persia The Lost Crown
Shared: 2D Platformer · Precision Platformer · Action-Adventure

Bloody Trapland
Shared: Precision Platformer · Local Co-Op · Singleplayer

Tomb Raider I-III Remastered Starring Lara Croft
Shared: Old School · Action-Adventure · Singleplayer

Shovel Knight: Treasure Trove
Shared: Platformer · Retro · Singleplayer

La-Mulana 2
Shared: Souls-like · 2D Platformer · Action-Adventure