Games like Sad Virus Deathland
Games like Sad Virus Deathland include Human Fall Flat, Spirit of the North, Scribblenauts Unlimited, Donut County, and Slime Rancher. We matched them by the tags players give Sad Virus Deathland on Steam (Casual, Adventure, Sandbox, Walking Simulator, and Puzzle): closest matches first, and among equally close ones the better-known games.

Human Fall Flat
Shared: Puzzle · Adventure · Sandbox

Spirit of the North
Shared: Adventure · Casual · Puzzle

Scribblenauts Unlimited
Shared: Casual · Adventure · Puzzle

Donut County
Shared: Casual · Puzzle · Adventure

Slime Rancher
Shared: Adventure · Sandbox · Casual

A Hat in Time
Shared: 3D Platformer · Adventure · Collectathon

Moncage
Shared: Casual · Puzzle · Adventure

Chained Together
Shared: Adventure · Casual · 3D Platformer

Pikuniku
Shared: Adventure · Casual · Puzzle

Librarian: Tidy Up the Arcane Library!
Shared: Casual · Collectathon · Puzzle

The Last Campfire
Shared: Adventure · Puzzle · Cute

Totally Accurate Battle Simulator
Shared: Sandbox · Adventure · Funny

Wobbly Life
Shared: Adventure · Sandbox · Casual

Placid Plastic Duck Simulator
Shared: Casual · Collectathon · Cute

Little Inferno
Shared: Casual · Puzzle · Sandbox

Garry's Mod
Shared: Sandbox · Casual · Funny

Grow Home
Shared: Adventure · Casual · 3D Platformer

Hidden Folks
Shared: Casual · Hidden Object · Puzzle

TOEM: A Photo Adventure
Shared: Adventure · Puzzle · Casual

s&box
Shared: Sandbox · Casual · 3D Platformer

Kao the Kangaroo: Round 2 (2003 re-release)
Shared: Adventure · Casual · 3D Platformer

The Exit 8
Shared: Walking Simulator · Puzzle · Adventure

Biped
Shared: Puzzle · Adventure · Sandbox

Sizeable
Shared: Casual · Puzzle · Hidden Object