Games like HG Adventure
Games like HG Adventure include Stardew Valley, Terraria, Forager, DAVE THE DIVER, and My Time at Portia. We matched them by the tags players give HG Adventure on Steam (Casual, Adventure, Sandbox, Farming Sim, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Farming Sim · Sandbox · Pixel Graphics

Terraria
Shared: Sandbox · Adventure · Building

Forager
Shared: Farming Sim · Sandbox · Adventure

DAVE THE DIVER
Shared: Casual · Adventure · Pixel Graphics

My Time at Portia
Shared: Farming Sim · Casual · Adventure

Hydroneer
Shared: Sandbox · Mining · Base Building

Starbound
Shared: Sandbox · Adventure · Casual

Scrap Mechanic
Shared: Sandbox · Building · Adventure

My Time at Sandrock
Shared: Farming Sim · Building · Sandbox

Luna's Fishing Garden
Shared: 2D Platformer · Sandbox · Farming Sim

Garry's Mod
Shared: Sandbox · Casual · Building

Portal Knights
Shared: Adventure · Sandbox · Building

Keplerth
Shared: Sandbox · Adventure · Casual

Slime Rancher
Shared: Adventure · Sandbox · Casual

ARK: Survival Ascended
Shared: Adventure · Sandbox · Building

I Am Future: Cozy Apocalypse Survival
Shared: Casual · Farming Sim · Sandbox

Luma Island
Shared: Casual · Farming Sim · Adventure

ARK: Survival Evolved
Shared: Adventure · Building · Sandbox

Yonder: The Cloud Catcher Chronicles
Shared: Adventure · Farming Sim · Casual

Sun Haven
Shared: Farming Sim · Adventure · Pixel Graphics

Farm Together 2
Shared: Farming Sim · Sandbox · Casual

Wobbly Life
Shared: Adventure · Sandbox · Casual

Staxel
Shared: Farming Sim · Sandbox · Building

Tiny Glade
Shared: Sandbox · Casual · Building