Games like FortressCraft : Chapter 1
Games like FortressCraft : Chapter 1 include Rust, Trove, The Forest, Scrap Mechanic, and Satisfactory. We matched them by the tags players give FortressCraft : Chapter 1 on Steam (Voxel, Building, Choose Your Own Adventure, Adventure, and Crafting): closest matches first, and among equally close ones the better-known games.

Rust
Shared: Crafting · Building · Adventure

Trove
Shared: Voxel · Sandbox · Building

The Forest
Shared: Building · Crafting · Adventure

Scrap Mechanic
Shared: Building · Crafting · Sandbox

Satisfactory
Shared: Crafting · Building · Base Building

ARK: Survival Evolved
Shared: Building · Crafting · Adventure

Terraria
Shared: Adventure · Building · Sandbox

ARK: Survival Ascended
Shared: Building · Crafting · Adventure

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

Timberborn
Shared: Voxel · City Builder · Building

Raft
Shared: Building · Crafting · Adventure

Valheim
Shared: Building · Crafting · Adventure

Stonehearth
Shared: Building · City Builder · Voxel

Medieval Dynasty
Shared: Building · Crafting · Sandbox

7 Days to Die
Shared: Voxel · Building · Open World

Palworld
Shared: Crafting · Adventure · Open World

Portal Knights
Shared: Adventure · Building · Crafting

Factorio
Shared: Crafting · Building · Base Building

Enshrouded
Shared: Crafting · Adventure · Building

Townscaper
Shared: Building · City Builder · Casual

Starbound
Shared: Adventure · Crafting · Sandbox

Core Keeper
Shared: Building · Crafting · Open World

Creativerse
Shared: Voxel · Building · Crafting

Rising World
Shared: Building · Voxel · Crafting