Games like YORG.io
Games like YORG.io include Plants vs. Zombies GOTY Edition, They Are Billions, Plague Inc: Evolved, Bloons TD 6, and Diplomacy is Not an Option. We matched them by the tags players give YORG.io on Steam (Strategy, Indie, Casual, Tower Defense, and Zombies): closest matches first, and among equally close ones the better-known games.

Plants vs. Zombies GOTY Edition
Shared: Strategy · Tower Defense · Zombies

They Are Billions
Shared: Strategy · Base Building · Zombies

Plague Inc: Evolved
Shared: Strategy · Indie · Casual

Bloons TD 6
Shared: Strategy · Tower Defense · Casual

Diplomacy is Not an Option
Shared: Resource Management · Zombies · Base Building

Factorio
Shared: Strategy · Base Building · Resource Management

Creeper World 3: Arc Eternal
Shared: Strategy · Indie · Tower Defense

Mindustry
Shared: Tower Defense · Strategy · Base Building

Kingdom Rush - Tower Defense
Shared: Strategy · Tower Defense · Casual

Oxygen Not Included
Shared: Base Building · Resource Management · Strategy

Game Dev Tycoon
Shared: Indie · Strategy · Casual

Kingdom Two Crowns
Shared: Tower Defense · Strategy · Base Building

Rogue Tower
Shared: Strategy · Tower Defense · Casual

Mini Motorways
Shared: Strategy · Casual · Indie

Kingdom Rush Frontiers - Tower Defense
Shared: Strategy · Tower Defense · Singleplayer

Rock 'N' Roll Defense
Shared: Strategy · Tower Defense · Casual

Legion TD 2 - Multiplayer Tower Defense
Shared: Strategy · Tower Defense · Indie

Kingdom Rush Origins - Tower Defense
Shared: Strategy · Tower Defense · Casual

Rise to Ruins
Shared: Strategy · Tower Defense · Base Building

Risen Kingdom
Shared: Strategy · Indie · Tower Defense

This War of Mine
Shared: Strategy · Singleplayer · Base Building

Emberward
Shared: Strategy · Tower Defense · Indie

shapez
Shared: Strategy · Base Building · Resource Management

Plants vs. Zombies™: Replanted
Shared: Tower Defense · Zombies · Casual