Games like Snailbreak
Games like Snailbreak include Slime Rancher, Slime Rancher 2, Firewatch, Garry's Mod, and Goat Simulator. We matched them by the tags players give Snailbreak on Steam (Casual, Cartoony, Adventure, Open World, and Outbreak Sim): closest matches first, and among equally close ones the better-known games.

Slime Rancher
Shared: Adventure · Open World · First-Person

Slime Rancher 2
Shared: Open World · Adventure · First-Person

Firewatch
Shared: Adventure · First-Person · Open World

Garry's Mod
Shared: Casual · First-Person · Funny

Goat Simulator
Shared: Open World · Casual · Comedy

Grand Theft Auto V Legacy
Shared: Open World · Adventure · First-Person

Thank Goodness You're Here!
Shared: Adventure · Casual · Comedy

Bugsnax
Shared: Adventure · First-Person · Cartoony

Human Fall Flat
Shared: Adventure · Open World · Funny

Wobbly Life
Shared: Adventure · Open World · Casual

Thief Simulator
Shared: First-Person · Open World · Adventure

The Witness
Shared: Open World · First-Person · Colorful

Supraland
Shared: Adventure · First-Person · Open World

Big Walk
Shared: Open World · Adventure · Casual

The Stanley Parable
Shared: First-Person · Comedy · Adventure

PEAK
Shared: Adventure · First-Person · Comedy

Far Cry 3
Shared: Open World · Adventure · First-Person

Donut County
Shared: Casual · Adventure · Indie

Tiny Terry's Turbo Trip
Shared: Adventure · Open World · Casual

MECCHA CHAMELEON
Shared: Casual · Funny · Comedy

There Is No Game: Wrong Dimension
Shared: Adventure · Casual · Indie

RV There Yet?
Shared: Adventure · First-Person · Funny

Jazzpunk: Director's Cut
Shared: Adventure · Comedy · Indie

CHUCHEL
Shared: Casual · Cartoony · Comedy