Games like PlayIndex
Games like PlayIndex include Plague Inc: Evolved, Cookie Clicker, Nodebuster, Game Dev Tycoon, and BidKing. We matched them by the tags players give PlayIndex on Steam (Strategy, Casual, Idler, Simulation, and Strategy RPG): closest matches first, and among equally close ones the better-known games.

Plague Inc: Evolved
Shared: Strategy · Simulation · Casual

Cookie Clicker
Shared: Idler · Casual · Indie

Nodebuster
Shared: Casual · Strategy · Idler

Game Dev Tycoon
Shared: Strategy · Simulation · Casual

BidKing
Shared: Strategy · Casual · Simulation

Shelldiver
Shared: Casual · Idler · Resource Management

Dictators:No Peace Countryballs
Shared: Strategy · Casual · Simulation

A Game About Feeding A Black Hole
Shared: Casual · Strategy · Idler

Chef Knight
Shared: Strategy · Casual · Simulation

Mini Motorways
Shared: Strategy · Casual · Simulation

Factorio
Shared: Strategy · Resource Management · Multiplayer

Town of Salem
Shared: Strategy · Casual · Multiplayer

Reus
Shared: Strategy · Simulation · Casual

Immortal Family
Shared: Strategy · Simulation · Strategy RPG

911 Operator
Shared: Strategy · Simulation · Casual

Incredicer
Shared: Casual · Idler · Strategy

ShellShock Live
Shared: Strategy · 2D · Casual

Firestone – Idle Clicker Online RPG
Shared: Idler · Strategy RPG · Strategy

Tower Wizard
Shared: Idler · Strategy · Resource Management

Thriving City: Song
Shared: Strategy · Simulation · Casual

Bloons TD 6
Shared: Strategy · Casual · Multiplayer

Dragon Cliff
Shared: Strategy · Idler · Casual

Mini Metro
Shared: Strategy · Simulation · Casual

Your Big, Cute Monster Farm
Shared: Casual · Strategy · Simulation