Games like PaperPlane
Games like PaperPlane include Mini Motorways, Superflight, Game Dev Tycoon, Mini Metro, and Plague Inc: Evolved. We matched them by the tags players give PaperPlane on Steam (Casual, Flight, Simulation, Runner, and Driving): closest matches first, and among equally close ones the better-known games.

Mini Motorways
Shared: Casual · Simulation · Minimalist

Superflight
Shared: Flight · Casual · Indie

Game Dev Tycoon
Shared: Simulation · Casual · Indie

Mini Metro
Shared: Simulation · Casual · Minimalist

Plague Inc: Evolved
Shared: Simulation · Casual · Indie

Mountain
Shared: Casual · Simulation · Indie

Train Simulator Classic
Shared: Simulation · Casual · Driving

Bomber Crew
Shared: Simulation · Flight · Indie

911 Operator
Shared: Simulation · Casual · Indie

American Truck Simulator
Shared: Simulation · Driving · Indie

Gas Station Simulator
Shared: Simulation · Casual · Singleplayer

Passpartout: The Starving Artist
Shared: Casual · Simulation · Indie

Bus Driver
Shared: Simulation · Driving · Casual

Car Dealer Simulator
Shared: Simulation · Driving · Casual

House Flipper
Shared: Simulation · Casual · Singleplayer

Mini Airways - ATC simulator
Shared: Flight · Simulation · Casual

BeamNG.drive
Shared: Simulation · Driving · Singleplayer

Slackers - Carts of Glory
Shared: Casual · Simulation · Driving

City Car Driving
Shared: Simulation · Driving · Singleplayer

Microsoft Flight Simulator (2020) 40th Anniversary Edition
Shared: Flight · Simulation · Singleplayer

OMSI 2: Steam Edition
Shared: Simulation · Driving · Casual

Streamer Life Simulator
Shared: Casual · Simulation · Singleplayer

Papers, Please
Shared: Simulation · Indie · Singleplayer

Chinese Parents
Shared: Casual · Simulation · Indie