Games like Superhero Idle: Strike League
Superhero Idle: Strike League. These games share the most with it, and each one says why.

Invincible: Guarding the GlobeUpdated
Also rpg, collection, combat
Recruit characters from Invincible, merge clones to rank them up, and run idle battles in the background.
75% idle
Street Fighter Duel - Idle RPGUpdated
Also idle, rpg, collection
Recruit famous Street Fighter characters into a team that keeps getting stronger while you are away.

Endless Frontier - RPGUpdated
Also idle, rpg, combat
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
Dungeon Crusher: AFK HeroesUpdated
Also idle, rpg, combat
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, collection
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 Girl's Moving Castle
Also rpg, collection, combat
A fantasy idle RPG where you gather and raise companions for turn-based battles, with AFK growth and daily reward collection taking a few minutes a day.
86% steam70% idle
AFK ArenaUpdated
Also rpg, collection, idle
A hero-collecting idle RPG with a campaign, a beast system and co-op modes.

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.

Mythic Heroes: Idle RPGUpdated
Also idle, rpg, collection
Summon gods and heroes from many mythologies into a party that battles on its own or under your direction.

Epic Stickman: RPG Idle WarUpdated
Also idle, rpg, combat
Guide a stickman hero through a shadowy realm, picking a class and gaining power in automatic fights even offline.
75% idle
PewDiePie's Pixelings Idle RPGUpdated
Also idle, rpg, collection
Collect pixel creatures alongside PewDiePie and arrange them in fights that blend idle play with turn-based tactics.

Crush Them All - Idle RPGUpdated
Also idle, rpg, collection
Collect heroes and crush bosses across more than 1000 stages, ascending to new worlds and progressing while away.
75% idle
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.

Fortress Saga: Idle AFK RPGUpdated
Also idle, rpg, combat
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
Castle Cats - Idle Hero RPGUpdated
Also idle, rpg, collection
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
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.

Mini Heroes: Magic ThroneUpdated
Also idle, rpg, collection
A fantasy hero collector where you help an exiled prince retake his throne, powering up heroes through auto-loot and AFK rewards.

Valor Legends: Idle RPGUpdated
Also idle, rpg, collection
Summon heroes from five factions, arrange them in rows, and let them fight automatically, sending them on bounties for bonuses while you are offline.
75% idle
MapleStory : Idle RPGUpdated
Also idle, rpg, combat
An idle take on MapleStory where your character battles and levels up automatically wherever you are, with companions, dungeons, and PvP.
75% idle
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.

OmniheroesUpdated
Also idle, rpg, collection
A fantasy squad RPG about rescuing Valkyries from demons, recruiting them into your team and powering them up at your manor.

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.

One-Punch Man:Road to Hero 2.0Updated
Also idle, rpg, collection
Collect One-Punch Man heroes and monsters, arrange them in formations, and send the team through story arcs and a tower of trials.