Games like Legends of Monster:Idle RPG
Legends of Monster:Idle RPG leans idle, never really ends. These games share the most with it, and each one says why.

Endless Frontier - RPGUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Lead a squad of knights and mages up thousands of stages against titans and dragons, with units that keep climbing and leveling on their own while you are away.
75% idle
Invincible: Guarding the GlobeUpdated
Also rpg, combat, idle · Same active/idle balance (leans idle)
Recruit characters from Invincible, merge clones to rank them up, and run idle battles in the background.
75% idle
Epic Stickman: RPG Idle WarUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Guide a stickman hero through a shadowy realm, picking a class and gaining power in automatic fights even offline.
75% idle
Fortress Saga: Idle AFK RPGUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Collect heroes, clear dungeons, and upgrade a fortress in a fantasy idle RPG where your party keeps fighting and gathering rewards while you are offline.
75% idle
MapleStory : Idle RPGUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
An idle take on MapleStory where your character battles and levels up automatically wherever you are, with companions, dungeons, and PvP.
75% idle
F Class Adventurer: AFK RPGUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Level a lowly F-rank adventurer toward S-rank with screen-clearing area skills while experience keeps piling up offline.
75% idle
Dungeon Dogs - Idle Hero RPGUpdated
Also idle, rpg, animals · Same active/idle balance (leans idle)
Lead canine rebels against a tyrant cat king, letting them battle while you are busy or joining fights live, plus building and crafting.
75% idle
Dungeon Crusher: AFK HeroesUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Collect heroes who clear dungeons without you, then log in to claim loot and assemble squads for PvP and PvE rankings.
75% idle
Seven Knights Idle AdventureUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Assemble Seven Knights heroes into a team for 10 vs 10 auto battles that keep earning experience and gold while you are logged out.
75% idle
The Walking Dead: All-StarsUpdated
Also idle, rpg, combat · Same active/idle balance (leans idle)
Lead Walking Dead survivors through team battles in overrun cities, with the squad fighting on while you are away.
75% idle
Slayer LegendUpdated
Also idle, rpg · Same active/idle balance (leans idle)
Raise a pixel-art demon slayer through AFK combat, leveling gear and combining elemental skills in a retro fantasy world.
75% idle
Idle Monster TD
Also animals, combat · Same active/idle balance (leans idle)
Place elemental monsters on the map to hold off endless robot waves, combining their abilities and upgrading stats between fights.
72% steam70% idle
XiuzhenWorld
Also rpg, animals, combat
Cultivate from mortal to immortal in a 3D world, capturing monster pets to fight alongside you and letting an AFK mode grind.
77% steamhas ending50% idle
Alien Invasion: RPG Idle SpaceUpdated
Also rpg, combat, idle
Guide an alien that eats humans to grow stronger, evolve its abilities and beat bosses in new locations.

Street Fighter Duel - Idle RPGUpdated
Also idle, rpg, combat
Recruit famous Street Fighter characters into a team that keeps getting stronger while you are away.

Hero Factory : Idle TycoonDormant
Also idle, rpg, combat
Mass-produce heroes in factories and send them against bosses, reinvesting gold into more production lines and gear upgraded through a matching minigame.

Clicker Heroes - Idle SlayerUpdated
Also idle, rpg, combat
Tap to fight waves of monsters and recruit a team of heroes with their own abilities, in the mobile version of a long-running idle RPG.

Archer Forest : Idle DefenseUpdated
Also idle, combat, animals
Defend a forest with animal archers by merging arrows into stronger ones, clearing stages, and beating bosses for loot.

Ghost Invasion: Idle HunterUpdated
Also idle, rpg, combat
Capture invading spirits as a ghost hunter, upgrading your trapper's power, speed, and capture radius to take on bosses across new areas.

Lootfiend: Idle DungeonsUpdated
Also idle, rpg, combat
A dark fantasy loot RPG where your hero fights on auto-mode, rerolling gear stats, mixing skills and runes, and recruiting sidekicks.

Idle Necromancer: AFK Tap HeroDormant
Also idle, rpg, combat
Play as a necromancer raising zombies to raze villages and fight the king's army, harvesting Nether to grow your power.

Idle Berserker: legend of rpgUpdated
Also idle, rpg, combat
A reborn swordsman fuels his rage to cut through enemies on the way to a black dragon, collecting gear and skills.

Shadow War: Idle RPG SurvivalUpdated
Also idle, rpg, combat
Lead a dark knight's army through endless levels, summoning weapons and pets while auto-battle keeps resources coming.

Tailed Demon SlayerUpdated
Also idle, rpg, combat
Power up a hero with skills, relics and skins to clear undead bosses from an occupied town.