Games like Little Rocket Lab
Games like Little Rocket Lab include Stardew Valley, Terraria, Graveyard Keeper, My Time at Portia, and Satisfactory. We matched them by the tags players give Little Rocket Lab on Steam (RPG, Automation, Building, Crafting, and Adventure): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: RPG · Crafting · Sandbox

Terraria
Shared: Sandbox · Adventure · Crafting

Graveyard Keeper
Shared: RPG · Crafting · Sandbox

My Time at Portia
Shared: RPG · Crafting · Building

Satisfactory
Shared: Automation · Crafting · Building

Rust
Shared: Crafting · Building · Adventure

My Time at Sandrock
Shared: Building · Crafting · RPG

Portal Knights
Shared: RPG · Adventure · Building

Factorio
Shared: Automation · Crafting · Sandbox

Littlewood
Shared: RPG · Crafting · Building

Sandustry
Shared: Automation · Crafting · Sandbox

DRAGON QUEST BUILDERS™ 2
Shared: RPG · Building · Adventure

Graveyard Keeper 2
Shared: Building · Automation · Sandbox

Conan Exiles Enhanced
Shared: Building · Crafting · RPG

Starbound
Shared: Sandbox · Adventure · Crafting

Romestead
Shared: RPG · Crafting · Adventure

Fields of Mistria
Shared: RPG · Life Sim · Cute

Disney Dreamlight Valley
Shared: Adventure · Relaxing · Sandbox

Starsand Island
Shared: RPG · Building · Crafting

DAVE THE DIVER
Shared: Adventure · RPG · Relaxing

Coral Island
Shared: RPG · Crafting · Life Sim

Potion Craft: Alchemist Simulator
Shared: Crafting · RPG · Relaxing

No Place Like Home
Shared: RPG · Crafting · Building

Necesse
Shared: Crafting · Sandbox · RPG