Games like Virus Popper
Games like Virus Popper include Path of Exile, Idle Champions of the Forgotten Realms, The WereCleaner, BLEACH Brave Souls, and Where Winds Meet. We matched them by the tags players give Virus Popper on Steam (Education, Arcade, Casual, Free to Play, and On-Rails Shooter): closest matches first, and among equally close ones the better-known games.

Path of Exile
Shared: Free to Play · Hack and Slash · RPG

Idle Champions of the Forgotten Realms
Shared: Free to Play · Casual · Strategy

The WereCleaner
Shared: Casual · Arcade · Free to Play

BLEACH Brave Souls
Shared: Free to Play · Action · Singleplayer

Where Winds Meet
Shared: Free to Play · Singleplayer · Casual

Warframe
Shared: Free to Play · Action · RPG

War Thunder
Shared: Free to Play · Action · VR

Project Wingman
Shared: Arcade · Action · VR

Dota Underlords
Shared: Free to Play · Casual · Strategy

Ninja Kiwi Archive
Shared: Arcade · Casual · Action

GrandChase
Shared: Free to Play · Casual · Action

Zenless Zone Zero
Shared: Free to Play · Action · Hack and Slash

Marvel Rivals
Shared: Free to Play · Action · Casual

SMITE®
Shared: Free to Play · Action · Strategy

Vampire Survivors
Shared: Casual · Arcade · Singleplayer

Brawlhalla
Shared: Free to Play · Casual · Action

Drug Dealer Simulator: Free Sample
Shared: Free to Play · Casual · Action

Ultimate Custom Night
Shared: Free to Play · Singleplayer · Strategy

Waveform
Shared: Casual · Arcade · Indie

UNDECEMBER: The Farside
Shared: Hack and Slash · Free to Play · RPG

Timberman
Shared: Casual · Arcade · Action

Touhou Big Big Battle
Shared: Casual · Free to Play · Indie

Aircar
Shared: Free to Play · Casual · VR

Book of Yog Idle RPG
Shared: Hack and Slash · Casual · Singleplayer