Games like SpookyKillers: Chapter 1
Games like SpookyKillers: Chapter 1 include Brawlhalla, Left 4 Dead 2, Broforce, Castle Crashers®, and Overcooked! 2. We matched them by the tags players give SpookyKillers: Chapter 1 on Steam (Zombies, Local Co-Op, Local Multiplayer, Free to Play, and Singleplayer): closest matches first, and among equally close ones the better-known games.

Brawlhalla
Shared: Free to Play · Local Multiplayer · Co-op

Left 4 Dead 2
Shared: Zombies · Co-op · Shooter

Broforce
Shared: Co-op · Local Co-Op · Local Multiplayer

Castle Crashers®
Shared: Co-op · Local Co-Op · Local Multiplayer

Overcooked! 2
Shared: Local Co-Op · Co-op · Local Multiplayer

Left 4 Dead
Shared: Zombies · Co-op · Team-Based

BattleBlock Theater®
Shared: Co-op · Local Co-Op · Local Multiplayer

Overcooked
Shared: Local Co-Op · Co-op · Local Multiplayer

Gang Beasts
Shared: Co-op · Local Multiplayer · Casual

Delta Force
Shared: Free to Play · Singleplayer · Co-op

Apex Legends™
Shared: Free to Play · Shooter · Team-Based

Resident Evil 5
Shared: Co-op · Zombies · Local Co-Op

Plants vs. Zombies™: Replanted
Shared: Zombies · Local Multiplayer · Local Co-Op

Door Kickers: Action Squad
Shared: Local Co-Op · Zombies · 2D Platformer

Halo Infinite
Shared: Free to Play · Singleplayer · Co-op

Call of Duty®: Black Ops III
Shared: Zombies · Co-op · Singleplayer

PICO PARK
Shared: Co-op · Local Co-Op · Local Multiplayer

Dead Pixels
Shared: Zombies · Local Co-Op · Co-op

Resident Evil 6
Shared: Zombies · Co-op · Local Co-Op

Cuphead
Shared: Co-op · Local Co-Op · 2D

Killing Floor
Shared: Zombies · Co-op · Team-Based

Back 4 Blood
Shared: Zombies · Co-op · Singleplayer

Keep Talking and Nobody Explodes
Shared: Co-op · Local Multiplayer · Local Co-Op

World War Z
Shared: Zombies · Co-op · Singleplayer