Games like Alien Egg: Ascent
Games like Alien Egg: Ascent include Celeste, Hollow Knight, Hollow Knight: Silksong, FTL: Faster Than Light, and Super Meat Boy. We matched them by the tags players give Alien Egg: Ascent on Steam (2D Platformer, Difficult, Physics, Sci-fi, and Space): closest matches first, and among equally close ones the better-known games.
Celeste
Shared: Difficult · 2D Platformer · Indie
Hollow Knight
Shared: Difficult · Platformer · Indie
Hollow Knight: Silksong
Shared: Difficult · Indie · 2D
FTL: Faster Than Light
Shared: Space · Sci-fi · Difficult
Super Meat Boy
Shared: Difficult · 2D Platformer · Indie
Rain World
Shared: Difficult · Indie · 2D
Defy Gravity Extended
Shared: Indie · Space · Platformer
Getting Over It with Bennett Foddy
Shared: Difficult · Physics · Singleplayer
SANABI
Shared: 2D Platformer · 2D · Indie
Noita
Shared: Physics · Difficult · Indie
Nine Sols
Shared: Difficult · 2D · Platformer
BEEP
Shared: Indie · Physics · Platformer
Bionic Bay
Shared: Sci-fi · 2D · Space
Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Space · Singleplayer
VVVVVV
Shared: 2D Platformer · Difficult · Indie
Pizza Tower
Shared: 2D Platformer · Indie · Platformer
LIMBO
Shared: Indie · Platformer · 2D
Geometry Dash
Shared: Difficult · 2D · Platformer
Katana ZERO
Shared: 2D Platformer · Platformer · Indie
Spelunky 2
Shared: 2D Platformer · Difficult · Platformer
Intrusion 2
Shared: Physics · Indie · Sci-fi
Skul: The Hero Slayer
Shared: Indie · 2D · Difficult
Cuphead
Shared: Difficult · Platformer · 2D
Kerbal Space Program
Shared: Space · Physics · Indie