Games like Bunker Down
Games like Bunker Down include Vampire Survivors, Timberman, Broforce, UFO 50, and Rhythm Doctor. We matched them by the tags players give Bunker Down on Steam (Action, Casual, Arcade, Survival, and 2D Platformer): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Pixel Graphics · 2D · Casual

Timberman
Shared: Casual · Action · Pixel Graphics

Broforce
Shared: Action · Pixel Graphics · 2D

UFO 50
Shared: Action · Arcade · Pixel Graphics

Rhythm Doctor
Shared: Pixel Graphics · Action · 2D

Door Kickers: Action Squad
Shared: Action · 2D Platformer · Pixel Graphics

Brawlhalla
Shared: Casual · 2D Platformer · Action

SANABI
Shared: Action · Pixel Graphics · 2D Platformer

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

Downwell
Shared: Arcade · Pixel Graphics · Action

Terraria
Shared: Survival · 2D · Pixel Graphics

Katana ZERO
Shared: Action · Pixel Graphics · 2D Platformer

Twin Shot Deluxe
Shared: Action · Casual · Arcade

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

Dead Pixels
Shared: Action · Pixel Graphics · 2D

Megabonk
Shared: Action · Survival · Indie

Exit the Gungeon
Shared: Action · Arcade · 2D

Sonic Origins
Shared: Action · 2D Platformer · Casual

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

Timberman VS
Shared: Action · Casual · Arcade

Forager
Shared: Survival · Pixel Graphics · 2D

Cyberhunt
Shared: Action · Casual · Arcade

Skul: The Hero Slayer
Shared: Action · Pixel Graphics · 2D

PAC-MAN 256
Shared: Action · Arcade · Casual