Games like Ultratank
Games like Ultratank include Disney Speedstorm, FlatOut 2, Circuit Superstars, Tokyo Xtreme Racer, and Garfield Kart. We matched them by the tags players give Ultratank on Steam (Tanks, Score Attack, Casual, Runner, and 3D): closest matches first, and among equally close ones the better-known games.

Disney Speedstorm
Shared: Racing · Driving · 3D

FlatOut 2
Shared: Racing · Driving · Automobile Sim

Circuit Superstars
Shared: Driving · Racing · Automobile Sim

Tokyo Xtreme Racer
Shared: Driving · 3D · Racing

Garfield Kart
Shared: Driving · Racing · 3D

Drift86
Shared: Casual · Racing · Indie

Montaro
Shared: Casual · Runner · Indie

Mon Bazou
Shared: Driving · Automobile Sim · Racing

WEBFISHING
Shared: Casual · Indie · 3D

Jalopy
Shared: Driving · Racing · Casual

ALTF4
Shared: Runner · Casual · Platformer

Assetto Corsa Rally
Shared: 3D · Racing · Automobile Sim

Boss of this gym
Shared: Score Attack · Runner · Platformer

Snakeybus
Shared: Casual · Driving · Indie

Car Service Together
Shared: Casual · 3D · Automobile Sim

Absolute Drift
Shared: Driving · Racing · Automobile Sim

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

Need for Speed™ Unbound
Shared: Driving · Racing · Casual

Pikuniku
Shared: Casual · Indie · Cute

ShellShock Live
Shared: Tanks · Casual · Action

Razortron 2000
Shared: Casual · Indie · Racing

Retrowave
Shared: Casual · Racing · Indie

GRID Legends
Shared: Driving · Racing · 3D

WRC 8 FIA World Rally Championship
Shared: Score Attack · Driving · Racing