Games like Cat Hero : Idle RPG
Cat Hero : Idle RPG. These games share the most with it, and each one says why.

Idle Cat Gunner: Shooter RPGUpdated
Also cats, idle, merge
Cats blast through obstacles with fused guns, and rebirthing at milestone stages speeds up growth.

Blade IdleUpdated
Also idle, rpg, merge
Turn a herb collector into a sword hero, clearing stages and dungeons and merging gear to power up.

Castle Cats - Idle Hero RPGUpdated
Also idle, cats, rpg
Collect over 150 heroic cats and send them on quests against an evil pug wizard, returning to gather rewards and evolve your roster.
75% idle
SwordMasterUpdated
Also merge, rpg, idle
Merge swords and gear, evolve pets and summon fairies as a pixel-art avatar fights monsters and raids, leveling up offline too.
75% idle
Fruit Stand Fortune
Also cats, idle
Spin slot machines and pachinko boards for fruit to sell at Kate the Cat's stand, unlocking odd customers and auto-click upgrades.
96% steam
Alice's Gaze
Also cats, idle
Guide Alice through a haunted mansion as a cat god's altar pays out gold, reviving rooms one by one while idle battles and light puzzles lead toward an escape.
91% steam
AFK ArenaUpdated
Also rpg, idle
A hero-collecting idle RPG with a campaign, a beast system and co-op modes.

AFK God of DestructionUpdated
Also idle, rpg
Command shadow forces in a dark fantasy isekai, collecting artifacts and conquering dungeons while your shadows grow in your absence.
75% idle
AFK Heroes: Fantasy Idle RPGDormant
Also idle, rpg
Summon heroes, set lineups and let them fight while you are away, needing only minutes a day.
75% idle
Alien Invasion: RPG Idle SpaceUpdated
Also rpg, idle
Guide an alien that eats humans to grow stronger, evolve its abilities and beat bosses in new locations.

Almost a Hero - Idle AdventureUpdated
Also idle, rpg
Lead a team of hopeless heroes through dungeons, prestiging for permanent artifacts while they fight while away.
75% idle
Archer Forest : Idle DefenseUpdated
Also idle, merge
Defend a forest with animal archers by merging arrows into stronger ones, clearing stages, and beating bosses for loot.

Arkcraft - Idle AdventureUpdated
Also idle, rpg
Grow a castaway raft into a huge floating ark, adding rooms, docks, and defenses while the crew keeps gathering and processing materials while you are away.
75% idle
Auto Battles Online: Idle RPGUpdated
Also idle, rpg
Gear a team of heroes from thousands of items, place them on the field, and let them fight other players' teams automatically.

Battle Royale Tycoon Idle GameDormant
Also merge, idle
Slide and merge weapon tiles on a grid to build a battle royale arsenal of hundreds of weapons.

Blacksmith - Merge Idle RPGDormant
Also merge, idle
Merge weapons into over 81 new designs, use runes to multiply gold and duplicate items, and reset for Soul Gems when progress slows.

Bounty Bash: Idle Pirate RPGUpdated
Also idle, rpg
Summon a pirate crew that auto-battles at sea around the clock, growing stronger while you are away.
75% idle
Candy Critters: Idle MergeUpdated
Also merge, idle
Buy and merge cute critters that chew through candy blocks to uncover coins and treasure across a sugary world.
75% idle
Cats&Soup: Relaxing Cozy GamesUpdated
Also cats, idle
Cats in a forest cook soup and gather resources while you're idle; dress them up and unlock new recipes.
75% idle
Clicker Heroes - Idle SlayerUpdated
Also idle, rpg
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.

CookieRun: Crumble - Idle RPGUpdated
Also idle, rpg
Field a squad of up to 12 Cookies that auto-battle nonstop, gathering upgrade resources while you are offline.
75% idle
Crush Them All - Idle RPGUpdated
Also idle, rpg
Collect heroes and crush bosses across more than 1000 stages, ascending to new worlds and progressing while away.
75% idle
Darkest AFK: Offline RPG GamesUpdated
Also idle, rpg
Summon and gear up knights, archers and mages for dark fantasy auto battles through cursed lands and dungeons, with progress continuing offline.
75% idle
Demigod Idle: Rise of a legendDormant
Also idle, rpg
Play a demigod stripped of angelic and demonic power, regaining it through fast idle growth and flashy 2.5D battles.