Games like Underground Turtle Races
Games like Underground Turtle Races include Mini Motorways, Plague Inc: Evolved, Unpacking, Retrowave, and Umamusume: Pretty Derby. We matched them by the tags players give Underground Turtle Races on Steam (Casual, Simulation, Racing, Cute, and Stylized): closest matches first, and among equally close ones the better-known games.

Mini Motorways
Shared: Simulation · Casual · Indie

Plague Inc: Evolved
Shared: Simulation · Casual · Indie

Unpacking
Shared: Casual · Cute · Simulation

Retrowave
Shared: Racing · Casual · Simulation

Umamusume: Pretty Derby
Shared: Cute · Racing · Gambling

Razortron 2000
Shared: Casual · Racing · Top-Down

Slime Rancher
Shared: Cute · Simulation · Casual

Minami Lane
Shared: Casual · Cute · Simulation

Sticky Business
Shared: Casual · Simulation · Cute

Drift86
Shared: Racing · Casual · Simulation

inbento
Shared: Casual · Cute · Simulation

Slime Rancher 2
Shared: Cute · Simulation · Casual

WEBFISHING
Shared: Casual · Cute · Stylized

911 Operator
Shared: Simulation · Casual · Indie

Circuit Superstars
Shared: Racing · Top-Down · Cute

Chinese Parents
Shared: Simulation · Casual · Indie

Game Dev Tycoon
Shared: Simulation · Casual · Indie

Leaf it Alone
Shared: Simulation · Casual · Cute

Townscaper
Shared: Casual · Simulation · Stylized

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

Florence
Shared: Casual · Cute · Indie

Calico
Shared: Casual · Cute · Simulation

Mountain
Shared: Simulation · Casual · Indie

Door Kickers
Shared: Simulation · Top-Down · Tactical