Games like Sidewalk Simulator
Games like Sidewalk Simulator include Orcs Must Die! 2, Orcs Must Die! 3, Orcs Must Die!, Broforce, and HELLDIVERS™ 2. We matched them by the tags players give Sidewalk Simulator on Steam (Action, Strategy, Tower Defense, Gore, and Economy): closest matches first, and among equally close ones the better-known games.

Orcs Must Die! 2
Shared: Action · Tower Defense · Strategy

Orcs Must Die! 3
Shared: Tower Defense · Strategy · Co-op

Orcs Must Die!
Shared: Action · Tower Defense · Strategy

Broforce
Shared: Action · Co-op · Pixel Graphics

HELLDIVERS™ 2
Shared: Action · Co-op · Third-Person Shooter

Risk of Rain 2
Shared: Co-op · Action · Action Roguelike

Schedule I
Shared: Co-op · Action · Simulation

Orcs Must Die! Deathtrap
Shared: Tower Defense · Co-op · Action

Serious Sam 3: BFE
Shared: Action · Co-op · Gore

Left 4 Dead 2
Shared: Co-op · Action · Gore

Thronefall
Shared: Strategy · Tower Defense · Action

Sanctum 2
Shared: Tower Defense · Strategy · Action

Resident Evil 5
Shared: Action · Co-op · Third-Person Shooter

Saints Row: The Third
Shared: Action · Co-op · Comedy

X-Morph: Defense
Shared: Strategy · Action · Tower Defense

The Riftbreaker
Shared: Tower Defense · Base Building · Action

Enter the Gungeon
Shared: Action Roguelike · Bullet Hell · Co-op

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Base Building

Once Human
Shared: Action · Co-op · Strategy

Bloons TD 5
Shared: Strategy · Tower Defense · Action

PUBG: BATTLEGROUNDS
Shared: Action · Co-op · Strategy

Bloons TD 6
Shared: Strategy · Tower Defense · Co-op

Police Stories
Shared: Action · Strategy · Co-op

Resident Evil 6
Shared: Action · Co-op · Third-Person Shooter