Games like Nova-111
Games like Nova-111 include STAR WARS Zero Company™, Skul: The Hero Slayer, Into the Breach, The Binding of Isaac: Rebirth, and Hades. We matched them by the tags players give Nova-111 on Steam (Singleplayer, Sci-fi, Action Roguelike, Puzzle, and Turn-Based Tactics): closest matches first, and among equally close ones the better-known games.

STAR WARS Zero Company™
Shared: Sci-fi · Singleplayer · Turn-Based Tactics

Skul: The Hero Slayer
Shared: Action Roguelike · Singleplayer · Indie

Into the Breach
Shared: Turn-Based Tactics · Puzzle · Sci-fi

The Binding of Isaac: Rebirth
Shared: Action Roguelike · Singleplayer · Indie

Hades
Shared: Action Roguelike · Singleplayer · Indie

Stray
Shared: Singleplayer · Puzzle · Exploration

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

The Talos Principle
Shared: Puzzle · Sci-fi · Singleplayer

Portal 2
Shared: Singleplayer · Puzzle · Sci-fi

Rise of the Tomb Raider™
Shared: Singleplayer · Puzzle · Exploration

Deliver Us The Moon
Shared: Sci-fi · Singleplayer · Puzzle

Brotato
Shared: Singleplayer · Action Roguelike · Sci-fi

Outer Wilds
Shared: Exploration · Puzzle · Singleplayer

Portal
Shared: Puzzle · Singleplayer · Sci-fi

BattleTech
Shared: Sci-fi · Turn-Based Tactics · Singleplayer

Starfield
Shared: Singleplayer · Sci-fi · Exploration

Atomic Heart
Shared: Singleplayer · Sci-fi · Puzzle

The Swapper
Shared: Sci-fi · Puzzle · Singleplayer

XCOM®: Chimera Squad
Shared: Singleplayer · Turn-Based Tactics · Sci-fi

Warhammer 40,000: Mechanicus
Shared: Sci-fi · Turn-Based Tactics · Singleplayer

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

Tomb Raider Game of the Year
Shared: Singleplayer · Adventure · Action

STAR WARS™ Empire at War - Gold Pack
Shared: Sci-fi · Singleplayer · RTS

Cult of the Lamb
Shared: Action Roguelike · Singleplayer · Dungeon Crawler