Games like Gelatine
Games like Gelatine include Terraria, Core Keeper, Rust, Forager, and Starbound. We matched them by the tags players give Gelatine on Steam (Sandbox, Survival, 2D, Bullet Hell, and Combat): closest matches first, and among equally close ones the better-known games.

Terraria
Shared: Sandbox · Survival · 2D

Core Keeper
Shared: Survival · Sandbox · Pixel Graphics

Rust
Shared: Survival · Crafting · Sandbox

Forager
Shared: Survival · Sandbox · Pixel Graphics

Starbound
Shared: Sandbox · Survival · Crafting

Valheim
Shared: Survival · Crafting · Building

The Forest
Shared: Survival · Crafting · Building

Necesse
Shared: Sandbox · Survival · Pixel Graphics

ARK: Survival Evolved
Shared: Survival · Crafting · Building

ARK: Survival Ascended
Shared: Survival · Sandbox · Crafting

Enshrouded
Shared: Survival · Crafting · Open World

Kenshi
Shared: Sandbox · Survival · Open World

Scrap Mechanic
Shared: Sandbox · Survival · Building

Conan Exiles Enhanced
Shared: Survival · Sandbox · Crafting

Project Zomboid
Shared: Survival · Sandbox · Crafting

Once Human
Shared: Survival · Open World · Action

Sons Of The Forest
Shared: Survival · Crafting · Open World

Palworld
Shared: Survival · Crafting · Open World

Raft
Shared: Survival · Crafting · Sandbox

Don't Starve Together
Shared: Survival · Sandbox · Crafting

Factorio
Shared: Sandbox · Survival · Crafting

Space Engineers
Shared: Sandbox · Survival · Building

Medieval Dynasty
Shared: Survival · Crafting · Building

Stardew Valley
Shared: Pixel Graphics · Sandbox · Crafting