Games like The Otterman Empire
Games like The Otterman Empire include Party Animals, Marvel Rivals, Gang Beasts, Pummel Party, and PRAGMATA. We matched them by the tags players give The Otterman Empire on Steam (Third-Person Shooter, 4 Player Local, Party Game, Cute, and Hero Shooter): closest matches first, and among equally close ones the better-known games.

Party Animals
Shared: Cute · Party Game · Casual

Marvel Rivals
Shared: Third-Person Shooter · Hero Shooter · Action

Gang Beasts
Shared: Party Game · Action · Casual

Pummel Party
Shared: 4 Player Local · Party Game · Casual

PRAGMATA
Shared: Third-Person Shooter · Cute · Action

Ultimate Chicken Horse
Shared: Party Game · 4 Player Local · Local Co-Op

Hitler is my crush
Shared: Third-Person Shooter · Hero Shooter · Cute

Gears 5
Shared: Third-Person Shooter · Action · Female Protagonist

Overcooked! 2
Shared: 4 Player Local · Casual · Local Co-Op

Plants vs. Zombies: Battle for Neighborville™
Shared: Third-Person Shooter · Hero Shooter · Casual

Onirism
Shared: Cute · Third-Person Shooter · Female Protagonist

Gears of War: E-Day
Shared: Third-Person Shooter · Female Protagonist · Action

MICROVOLTS: Recharged
Shared: Third-Person Shooter · Cute · Casual

Muse Dash
Shared: Cute · Female Protagonist · Casual

Escape From Duckov
Shared: Third-Person Shooter · Action · Cute

Overcooked
Shared: 4 Player Local · Indie · Local Co-Op

Party Panic
Shared: 4 Player Local · Casual · Indie

Little Witch Nobeta
Shared: Cute · Female Protagonist · Third-Person Shooter

Rubber Bandits
Shared: Party Game · Cute · Casual

Lovers in a Dangerous Spacetime
Shared: 4 Player Local · Cute · Local Co-Op

Strinova
Shared: Third-Person Shooter · Hero Shooter · Action

MECCHA CHAMELEON
Shared: Party Game · Casual · Cute

Hidden in Plain Sight
Shared: 4 Player Local · Party Game · Indie

Caster
Shared: Third-Person Shooter · Indie · Action