Games like I Made Myself a Ship
Games like I Made Myself a Ship include Cosmoteer: Starship Architect & Commander, FTL: Faster Than Light, Hotline Miami 2: Wrong Number, Reassembly, and Dome Keeper. We matched them by the tags players give I Made Myself a Ship on Steam (Sci-fi, Singleplayer, 2D, Space, and Action): closest matches first, and among equally close ones the better-known games.

Cosmoteer: Starship Architect & Commander
Shared: Sci-fi · Singleplayer · Space

FTL: Faster Than Light
Shared: Sci-fi · Space · Singleplayer

Hotline Miami 2: Wrong Number
Shared: Action · Top-Down · Difficult

Reassembly
Shared: Space · Building · 2D

Dome Keeper
Shared: Singleplayer · Sci-fi · Action

Hotline Miami
Shared: Action · Top-Down · Pixel Graphics

Geometry Dash
Shared: 2D · Difficult · Singleplayer

A Dance of Fire and Ice
Shared: Singleplayer · 2D · Difficult

STAR WARS™ Battlefront™ II
Shared: Singleplayer · Sci-fi · Space

Oxygen Not Included
Shared: Singleplayer · Building · 2D

STAR WARS Jedi: Survivor™
Shared: Singleplayer · Action · Sci-fi

Skul: The Hero Slayer
Shared: Action · 2D · Singleplayer

Defy Gravity Extended
Shared: Space · 2D · Singleplayer

Space Pirates and Zombies
Shared: Sci-fi · Space · Action

Heat Signature
Shared: Space · Sci-fi · Action

Endless Sky
Shared: Sci-fi · Space · Singleplayer

Ghostrunner
Shared: Action · Singleplayer · Difficult

Hyper Light Drifter
Shared: Singleplayer · Action · Pixel Graphics

BALL x PIT
Shared: Action · 2D · Top-Down

Super Hexagon
Shared: Difficult · Singleplayer · Fast-Paced

Timberman
Shared: 2D · Singleplayer · Action

The Escapists
Shared: Singleplayer · 2D · Action

SANABI
Shared: Action · Singleplayer · 2D

Pizza Tower
Shared: Singleplayer · Fast-Paced · 2D