Games like IdleOn - The Incremental MMO
Games like IdleOn - The Incremental MMO include Trove, Albion Online, Cookie Clicker, Idle Champions of the Forgotten Realms, and Stardew Valley. We matched them by the tags players give IdleOn - The Incremental MMO on Steam (Idler, Free to Play, Incremental, MMORPG, and Multiplayer): closest matches first, and among equally close ones the better-known games.

Trove
Shared: Free to Play · MMORPG · Pixel Graphics

Albion Online
Shared: Free to Play · MMORPG · Multiplayer

Cookie Clicker
Shared: Idler · Incremental · Pixel Graphics

Idle Champions of the Forgotten Realms
Shared: Idler · Free to Play · Incremental

Stardew Valley
Shared: Multiplayer · Pixel Graphics · RPG

Neverwinter
Shared: Free to Play · MMORPG · RPG

Where Winds Meet
Shared: Free to Play · Multiplayer · MMORPG

Dragon Cliff
Shared: Idler · Incremental · RPG

Guild Wars 2®
Shared: Free to Play · MMORPG · RPG

SMITE®
Shared: Free to Play · Multiplayer · MMORPG

Once Human
Shared: Free to Play · Multiplayer · Crafting

Destiny 2
Shared: Free to Play · MMORPG · Multiplayer

Terraria
Shared: Multiplayer · Pixel Graphics · Sandbox

Path of Exile
Shared: Free to Play · MMORPG · Multiplayer

Firestone – Idle Clicker Online RPG
Shared: Idler · Incremental · MMORPG

Shelldiver
Shared: Incremental · Idler · Management

Factorio
Shared: Multiplayer · Resource Management · Crafting

Swag and Sorcery
Shared: Pixel Graphics · Incremental · RPG

Star Trek Online
Shared: Free to Play · MMORPG · RPG

Marvel Rivals
Shared: Free to Play · Multiplayer · RPG

Shop Titans
Shared: Idler · Crafting · Management

Tower Wizard
Shared: Idler · Incremental · Pixel Graphics

Palia
Shared: Free to Play · Multiplayer · Crafting

Digseum
Shared: Idler · Incremental · Management