Games like HAMMY
Games like HAMMY include Game Dev Tycoon, Goat Simulator, Garry's Mod, Space Engineers, and Project Zomboid. We matched them by the tags players give HAMMY on Steam (Casual, Indie, Simulation, Sandbox, and Survival): closest matches first, and among equally close ones the better-known games.

Game Dev Tycoon
Shared: Indie · Simulation · Casual

Goat Simulator
Shared: Simulation · Sandbox · Casual

Garry's Mod
Shared: Sandbox · Casual · Simulation

Space Engineers
Shared: Sandbox · Simulation · Survival

Project Zomboid
Shared: Survival · Sandbox · Indie

Kenshi
Shared: Sandbox · Survival · Simulation

Banished
Shared: Simulation · Indie · Survival

Don't Starve
Shared: Survival · Indie · Sandbox

Plague Inc: Evolved
Shared: Simulation · Indie · Casual

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

House Flipper
Shared: Simulation · Casual · Sandbox

Wobbly Life
Shared: Sandbox · Simulation · Casual

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Indie

Stardew Valley
Shared: Simulation · Sandbox · Indie

Terraria
Shared: Sandbox · Survival · Indie

Equilinox
Shared: Indie · Casual · Simulation

Two Point Museum
Shared: Casual · Simulation · Sandbox

Barn Finders
Shared: Casual · Simulation · Indie

Starbound
Shared: Sandbox · Survival · Casual

PowerWash Simulator
Shared: Casual · Simulation · Sandbox

RimWorld
Shared: Survival · Sandbox · Simulation

Feed and Grow: Fish
Shared: Simulation · Survival · Indie

The Scroll of Taiwu : Beyond The Dome
Shared: Sandbox · Indie · Simulation

Everything
Shared: Casual · Simulation · Indie