Games like Lil Big Invasion
Games like Lil Big Invasion include A Hat in Time, Ori and the Will of the Wisps, Cult of the Lamb, Tinykin, and Slime Rancher. We matched them by the tags players give Lil Big Invasion on Steam (Dungeon Crawler, Collectathon, Action-Adventure, 2D, and Cute): closest matches first, and among equally close ones the better-known games.

A Hat in Time
Shared: Collectathon · Cute · Funny

Ori and the Will of the Wisps
Shared: Atmospheric · Adventure · Action-Adventure

Cult of the Lamb
Shared: Dungeon Crawler · Cute · 2D

Tinykin
Shared: Action-Adventure · Cute · Family Friendly

Slime Rancher
Shared: Cute · Adventure · Funny

PRAGMATA
Shared: Cute · Funny · Action-Adventure

SUPER CHICKEN JUMPER
Shared: 2D · Action-Adventure · Cute

Pikuniku
Shared: Cute · Adventure · Funny

The Last Campfire
Shared: Cute · Adventure · Atmospheric

Ratchet & Clank: Rift Apart
Shared: Action-Adventure · Adventure · Family Friendly

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Funny · Cute

Stray
Shared: Atmospheric · Adventure · Cute

OneShot
Shared: Cute · Atmospheric · 2D

Ogu and the Secret Forest
Shared: Action-Adventure · Collectathon · Cute

Scribblenauts Unlimited
Shared: 2D · Family Friendly · Adventure

Castle Crashers®
Shared: 2D · Funny · Adventure

Pumpkin Jack
Shared: Collectathon · Adventure · Action

Minecraft Dungeons
Shared: Dungeon Crawler · Action-Adventure · Adventure

Kingdom Rush - Tower Defense
Shared: 2D · Funny · Singleplayer

Nobody Saves the World
Shared: Dungeon Crawler · 2D · Adventure

Finding Paradise
Shared: 2D · Adventure · Funny

Hollow Knight
Shared: 2D · Atmospheric · Adventure

South Park™: The Stick of Truth™
Shared: Funny · Adventure · 2D

SANABI
Shared: 2D · Action-Adventure · Adventure