Games like Rooooomba Simulator!!
Games like Rooooomba Simulator!! include ARMORED CORE™ VI FIRES OF RUBICON™, Placid Plastic Duck Simulator, PRAGMATA, Goat Simulator, and MechWarrior 5: Clans. We matched them by the tags players give Rooooomba Simulator!! on Steam (Action, Casual, Simulation, Automobile Sim, and Collectathon): closest matches first, and among equally close ones the better-known games.

ARMORED CORE™ VI FIRES OF RUBICON™
Shared: Action · Mechs · Robots

Placid Plastic Duck Simulator
Shared: Casual · Collectathon · Cute

PRAGMATA
Shared: Action · Cute · Sci-fi

Goat Simulator
Shared: Simulation · Casual · Action

MechWarrior 5: Clans
Shared: Action · Simulation · Mechs

SPORE™
Shared: Simulation · Casual · Action

WEBFISHING
Shared: Casual · Cute · 3D

MechWarrior 5: Mercenaries
Shared: Simulation · Action · Mechs

SpaceEngine
Shared: Casual · Sci-fi · 3D

Mecha BREAK
Shared: Action · Mechs · Robots

Wreckfest
Shared: Simulation · Automobile Sim · Action

Drift86
Shared: Casual · Automobile Sim · Simulation

Turbo Dismount™
Shared: Simulation · Action · Automobile Sim

Gang Beasts
Shared: Action · Casual · Simulation

Car Service Together
Shared: Automobile Sim · Casual · Simulation

PLATiNA :: LAB
Shared: Simulation · Action · Casual

Slime Rancher 2
Shared: Cute · Simulation · Casual

Librarian: Tidy Up the Arcane Library!
Shared: Collectathon · Casual · Simulation

Prison Escape Simulator: Dig Out
Shared: Simulation · Casual · 3D

Calico
Shared: Casual · Cute · Simulation

The Cat Games
Shared: Casual · Action · Simulation

DJMAX RESPECT V
Shared: Casual · Action · Cute

Retrowave
Shared: Casual · Action · Simulation

House Flipper
Shared: Simulation · Casual · Action