Games like Spy Drops Gaiden
Games like Spy Drops Gaiden include Vampire Survivors, Bloodstained: Curse of the Moon, UFO 50, SANABI, and Shovel Knight: Treasure Trove. We matched them by the tags players give Spy Drops Gaiden on Steam (Action, Stealth, Retro, Arcade, and 2D): closest matches first, and among equally close ones the better-known games.

Vampire Survivors
Shared: Pixel Graphics · 2D · Action

Bloodstained: Curse of the Moon
Shared: Action · Retro · Pixel Graphics

UFO 50
Shared: Action · Retro · Pixel Graphics

SANABI
Shared: Action · Pixel Graphics · 2D

Shovel Knight: Treasure Trove
Shared: Retro · Pixel Graphics · Action

Broforce
Shared: Action · Pixel Graphics · 2D

Sonic Mania
Shared: Retro · 2D · Pixel Graphics

Party Hard
Shared: Stealth · Pixel Graphics · Action

Gunpoint
Shared: Stealth · 2D · Action

METAL SLUG
Shared: Action · Arcade · 2D

LUFTRAUSERS
Shared: Action · Arcade · 2D

METAL SLUG X
Shared: Action · Arcade · 2D

Rise of the Tomb Raider™
Shared: Action · Female Protagonist · Singleplayer

Hotline Miami 2: Wrong Number
Shared: Action · Pixel Graphics · Retro

UBERMOSH
Shared: Action · Pixel Graphics · Arcade

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

Dishonored 2
Shared: Stealth · Action · Singleplayer

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

Freedom Planet
Shared: Action · 2D · Female Protagonist

DEADBOLT
Shared: Stealth · Action · Pixel Graphics

Blazing Chrome
Shared: Action · Retro · Pixel Graphics

Bloodstained: Curse of the Moon 2
Shared: Action · Retro · 2D

Exit the Gungeon
Shared: Action · Arcade · Pixel Graphics

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