Games like Doug's Nightmare
Games like Doug's Nightmare include Borderlands 2, MADNESS: Project Nexus, DR LIVESEY ROM AND DEATH EDITION, Enter the Gungeon, and Escape From Duckov. We matched them by the tags players give Doug's Nightmare on Steam (Action, Beat 'em up, Shooter, Bullet Hell, and Dungeon Crawler): closest matches first, and among equally close ones the better-known games.
Borderlands 2
Shared: Action · Shooter · Looter Shooter
MADNESS: Project Nexus
Shared: Beat 'em up · Shooter · Action
DR LIVESEY ROM AND DEATH EDITION
Shared: Action · Hand-drawn · Beat 'em up
Enter the Gungeon
Shared: Bullet Hell · Dungeon Crawler · Action
Escape From Duckov
Shared: Action · Shooter · Looter Shooter
Angel at Dusk
Shared: Action · Shooter · Bullet Hell
Commando Collection
Shared: Action · Beat 'em up · Shooter
BioShock Infinite
Shared: Action · Shooter · Atmospheric
Furi
Shared: Bullet Hell · Beat 'em up · Action
Castle Crashers®
Shared: Beat 'em up · 2D · Action
12 is Better Than 6
Shared: Action · Shooter · Hand-drawn
PAYDAY 2
Shared: Action · Looter Shooter · Shooter
POSTAL: Brain Damaged
Shared: Action · Shooter · Stylized
Ghosts of Tabor
Shared: Action · Shooter · Looter Shooter
Strike Force Heroes
Shared: Action · Shooter · Arena Shooter
Tiny Tina's Wonderlands
Shared: Looter Shooter · Shooter · Action
Grand Theft Auto V Legacy
Shared: Action · Shooter · Atmospheric
Exit the Gungeon
Shared: Action · Bullet Hell · 2D
Streets of Rage 4
Shared: Action · Beat 'em up · 2D
Nova Drift
Shared: Bullet Hell · Shooter · Arena Shooter
Bit Blaster XL
Shared: Bullet Hell · Shooter · Action
CS2D
Shared: Shooter · Action · 2D
Tom Clancy’s The Division™
Shared: Action · Looter Shooter · Shooter
Stick It to the Stickman
Shared: Action · Beat 'em up · 2D