Games like Starboi
Games like Starboi include Vampire Survivors, Planes, Bullets and Vodka, Timberman, Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad, and UFO 50. We matched them by the tags players give Starboi on Steam (Action, Casual, Arcade, 2D, and Retro): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: 2D · Casual · Indie

Planes, Bullets and Vodka
Shared: Action · Casual · Retro

Timberman
Shared: Casual · Action · 2D

Shower With Your Dad Simulator 2015: Do You Still Shower With Your Dad
Shared: Arcade · 2D · Casual

UFO 50
Shared: Action · Retro · Indie

Cyberhunt
Shared: Action · Casual · Indie

A Dance of Fire and Ice
Shared: 2D · Arcade · Indie

PAC-MAN™ Championship Edition DX+
Shared: Arcade · Action · Retro

Streets of Rage 4
Shared: Action · 2D · Arcade

Kung Fury: Street Rage - Ultimate Edition
Shared: Arcade · Action · Retro

LUFTRAUSERS
Shared: Action · Arcade · Indie

To The Core
Shared: Casual · Arcade · 2D

One Finger Death Punch
Shared: Action · Indie · 2D

Trip to Vinelands
Shared: Action · Arcade · Indie

Retrowave
Shared: Casual · Action · Retro

Drift86
Shared: Casual · Arcade · Indie

One Finger Death Punch 2
Shared: Action · Casual · Indie

Orbt XL
Shared: Arcade · Action · 2D

DJMAX RESPECT V
Shared: Casual · Action · 2D

Zuma's Revenge!
Shared: Action · Casual · Arcade

Geometry Wars: Retro Evolved
Shared: Arcade · Casual · Retro

Razortron 2000
Shared: Casual · Arcade · Retro

Exit the Gungeon
Shared: Action · Arcade · Indie

PAC-MAN 256
Shared: Action · Arcade · Casual