Games like Penguins Can Fly
Games like Penguins Can Fly include Stardew Valley, Potion Craft: Alchemist Simulator, Goat Simulator, Paralives, and My Time at Portia. We matched them by the tags players give Penguins Can Fly on Steam (Indie, Simulation, Casual, Snow, and Fishing): closest matches first, and among equally close ones the better-known games.

Stardew Valley
Shared: Simulation · Life Sim · Indie

Potion Craft: Alchemist Simulator
Shared: Simulation · Indie · Singleplayer

Goat Simulator
Shared: Simulation · Indie · Casual

Paralives
Shared: Simulation · Indie · Life Sim

My Time at Portia
Shared: Life Sim · Simulation · Casual

Garry's Mod
Shared: Sandbox · Casual · Simulation

The Sims™ 4
Shared: Simulation · Life Sim · Sandbox

How to Fish
Shared: Indie · Fishing · Co-op

Game Dev Tycoon
Shared: Simulation · Indie · Casual

WEBFISHING
Shared: Casual · Fishing · Indie

Hydroneer
Shared: Base Building · Sandbox · Simulation

The Sims™ 3
Shared: Simulation · Life Sim · Casual

House Flipper
Shared: Simulation · Casual · Singleplayer

Chinese Parents
Shared: Simulation · Life Sim · Casual

PowerWash Simulator
Shared: Casual · Simulation · Sandbox

Plague Inc: Evolved
Shared: Simulation · Indie · Casual

Waterpark Simulator
Shared: Simulation · Sandbox · Singleplayer

Totally Accurate Battle Simulator
Shared: Simulation · Sandbox · Indie

Streamer Life Simulator
Shared: Simulation · Casual · Life Sim

Space Engineers
Shared: Simulation · Sandbox · Base Building

Two Point Museum
Shared: Simulation · Casual · Life Sim

Coral Island
Shared: Simulation · Life Sim · Singleplayer

Disney Dreamlight Valley
Shared: Simulation · Life Sim · Casual

Supermarket Simulator
Shared: Simulation · Life Sim · Singleplayer