Games like Progress Knight
Progress Knight mostly idle, never really ends, stacks 1 prestige layer. These games share the most with it, and each one says why.

Let Me DieUpdated
Also loop, short
A hero stuck fighting the same monster forever; unlock upgrades, finish quests and assemble builds to escape the loop. Early alpha.
3.3★ galaxy
MortalDormant
Also life sim, short
A Ludum Dare clicker that mixes incremental progress with a life sim about aging.

My Little Life
Also life sim · Same active/idle balance (mostly idle)
A small person lives out their life in a strip along the bottom of your screen, working, decorating and chasing dreams while you do other things.
91% steam90% idle
Meow Palace: Forbidden City
Also life sim · Same active/idle balance (mostly idle)
Raise a stray cat in the Forbidden City from your desktop, training skills like palace cooking and opera while it gathers materials for outfits and furniture.
91% steam90% idle
Melvor Idle
Same active/idle balance (mostly idle)
RuneScape's skilling loop distilled into menus. Train twenty skills, fight dungeons, fill the completion log.
90% steam85% idle
The Adventure of NAYU
Also short · Same active/idle balance (leans idle)
Click to help a fox and her party fight through a gentle, short story, spending star shards on training and costumes, with an endless mode afterward.
95% steamhas ending75% idle
Cavern Crawler
Also short
A short prototype where you repeatedly crawl through caverns and grow stronger between attempts; all content fits in under an hour.
4.3★ galaxy
Spellbound & Shelved
Also short · Same active/idle balance (leans idle)
Hire gnomes to reshelve thousands of spilled spellbooks in a wizard library. Flip the sign to trade customer income against the mess they make, until the last book is put away.
87% steamhas ending75% idleIdle Loops
Also loop
Plan a list of actions, run the loop, get stronger, plan a better loop. Pure optimisation; the Omsi fork is the one to play.
35% idle
Adorable GardenUpdated
Also life sim · Same active/idle balance (mostly idle)
Run a plant nursery with a partner and gardeners, a low-effort idle game with customizable avatars.
90% idle
Mr.Mine
Same active/idle balance (leans idle)
Dig a mine deeper and deeper, hire miners, discover what lives at the bottom.
92% steam75% idle
Legends of IdleOn
Same active/idle balance (mostly idle)
An idle MMO with a whole account of characters working different skills at once. Massive, sprawling, social.
77% steam80% idle
Citizen of Rome - Dynasty Ascendant
Also life sim
Guide a Roman family through generations, from commoners toward the Senate and perhaps a consulship, through festivals, marriages, elections and setbacks.
80% steam
Stuck In Time
Also loop
Plan action lists for each time loop, let them run, and refine routes through a pixel-art world as you work toward escape.
85% steamhas ending70% idle
Firestone Idle RPG
Same active/idle balance (mostly idle)
A big, polished free-to-play hero idler with guilds, expeditions and a lot of timers.
77% steam80% idle
Idle Pixel
Same active/idle balance (mostly idle)
A cosy pixel-art skiller: mining, farming, brewing, fighting, all ticking along in the background.
85% idle
Idle Galaxy
Same active/idle balance (mostly idle)
One persistent ship across ten planets: mine, fight, craft gear and trade with other players. A playable beta, updated often.
85% idle
AdVenture Capitalist
Same active/idle balance (mostly idle)
Lemonade stand to oil empire, hire managers so you never click again, cash in angel investors.
88% steam80% idle
Magic ArcheryUpdated
Also short
Train an elf commoner into a master archer by shooting targets, taking quests for gold and buying magic upgrades in a brief, hands-on climb with a set ending.
98% steamhas ending25% idle
Idling to Rule the Gods
Same active/idle balance (leans idle)
Train clones, fight gods, rebirth. An old-school Unity idler that still has a loyal crowd.
85% steam75% idle
Rogue with the Dead: Idle RPGUpdated
Also loop · Same active/idle balance (leans idle)
March an army 300 miles to slay the Demon Lord; troops fight automatically, and each death resets your run but makes you stronger.
has ending75% idle
Tap Wizard 2
Also loop
A wizard caught in a time loop fights waves automatically while you choose spells, perks and traits before each rewind.
76% steam70% idle
Master Healer Kale with useless party
Also short
Play the healer of a hopeless party, keeping them alive with spells and a 200-node skill tree until they can face the Demon King in about four hours.
95% steam4.0★ galaxyhas ending
Mogul Forge
Same active/idle balance (mostly idle)
Work odd jobs, buy businesses and hire managers to run them, then open new districts and reset into Legacy for a stronger empire.
80% idle