Games like Esport Test Toolkit (ETT)
Games like Esport Test Toolkit (ETT) include Fishing Planet, Aimlabs, War Thunder, The Sims™ 4, and SMITE®. We matched them by the tags players give Esport Test Toolkit (ETT) on Steam (Free to Play, Indie, Simulation, and Sports): closest matches first, and among equally close ones the better-known games.

Fishing Planet
Shared: Free to Play · Simulation · Sports

Aimlabs
Shared: Free to Play · Simulation · Indie

War Thunder
Shared: Free to Play · Simulation · Free To Play

The Sims™ 4
Shared: Free to Play · Simulation · Free To Play

SMITE®
Shared: Free to Play · Indie · Simulation

Session: Skate Sim
Shared: Simulation · Sports · Indie

skate.
Shared: Free to Play · Sports · Simulation

PIPE by BMX Streets
Shared: Indie · Simulation · Sports

Where Winds Meet
Shared: Free to Play · Indie · Simulation

ScooterFlow
Shared: Simulation · Indie · Sports

Automobilista 2
Shared: Simulation · Sports · Indie

Liftoff®: FPV Drone Racing
Shared: Simulation · Sports · Indie

Papers, Please
Shared: Indie · Simulation

GOALS
Shared: Free to Play · Sports · Simulation

Golf With Your Friends
Shared: Sports · Indie · Simulation

The Drone Racing League Simulator
Shared: Simulation · Indie · Sports

REMATCH
Shared: Sports · Simulation · Indie

EA SPORTS FC™ 25
Shared: Sports · Simulation · Free to Play

Path of Exile
Shared: Free to Play · Indie · Free To Play

Ultimate Custom Night
Shared: Free to Play · Indie · Free To Play

Assetto Corsa
Shared: Simulation · Sports · Indie

Uncrashed : FPV Drone Simulator
Shared: Simulation · Sports · Indie

Endless Sky
Shared: Free to Play · Simulation · Indie

Wreckfest
Shared: Simulation · Indie · Sports