Games like Alchemy Factory
Games like Alchemy Factory include Factorio, Satisfactory, Garry's Mod, Hydroneer, and Medieval Dynasty. We matched them by the tags players give Alchemy Factory on Steam (Automation, Medieval, Building, Sandbox, and Strategy): closest matches first, and among equally close ones the better-known games.

Factorio
Shared: Automation · Sandbox · Strategy

Satisfactory
Shared: Automation · Building · Multiplayer

Garry's Mod
Shared: Sandbox · Building · Multiplayer

Hydroneer
Shared: Automation · Sandbox · Building

Medieval Dynasty
Shared: Building · Medieval · Multiplayer

shapez
Shared: Automation · Sandbox · Strategy

Raft
Shared: Multiplayer · Building · Crafting

Dyson Sphere Program
Shared: Automation · Building · Base Building

Scrap Mechanic
Shared: Building · Sandbox · Multiplayer

Mindustry
Shared: Automation · Building · Strategy

Mount & Blade II: Bannerlord
Shared: Medieval · Strategy · Sandbox

House Flipper
Shared: Building · Multiplayer · Sandbox

Schedule I
Shared: Automation · Multiplayer · Simulation

shapez 2 - Factory
Shared: Automation · Building · Strategy

Bloons TD 6
Shared: Strategy · Multiplayer · Singleplayer

Prison Architect
Shared: Building · Sandbox · Strategy

Rust
Shared: Building · Multiplayer · Crafting

Cities: Skylines
Shared: Building · Strategy · Sandbox

Sons Of The Forest
Shared: Multiplayer · Building · Base Building

Space Engineers
Shared: Building · Sandbox · Multiplayer

Stardew Valley
Shared: Multiplayer · Sandbox · Building

Oxygen Not Included
Shared: Building · Base Building · Sandbox

Mount & Blade: Warband
Shared: Medieval · Sandbox · Strategy

FOUNDRY
Shared: Automation · Multiplayer · Building