Games like Archer Forest : Idle Defense
Archer Forest : Idle Defense. These games share the most with it, and each one says why.

Merge Gun: Shoot ZombieDormant
Also merge, idle, combat
Combine identical guns into stronger ones and use them to hold off waves of zombies.

Idle ArmyUpdated
Also merge, idle, combat
Merge soldiers into stronger units and push through waves of drones, ninjas and tanks.

Idle Animal EvolutionDormant
Also idle, animals, merge
Breed hybrid creatures in a lab by crossing pairs of animals.

Legends of Monster:Idle RPGDormant
Also idle, animals, combat
Start as a baby dinosaur and grow into a giant city-smashing monster, upgrading stats through auto battles that continue while you are logged off.
75% idle
Idle Horse RacingDormant
Also merge, idle, animals
Combine ponies into faster horses, race them and add stadium items to boost coin earnings.
75% idle
Bugtopia
Also idle, animals
Raise and breed over 300 real-world insect species in terrariums you landscape yourself, with breeding boxes that can produce rare new bugs.
92% steam
Marisa!ReturnTheBook!
Also idle, combat
A Touhou fan game where you craft Shanghai dolls styled after Gensokyo characters to storm Marisa's house and recover her borrowed books.
90% steam
Slimeward
Also combat, idle
Turn a slime that landed outside your house into resources, building up a village and recruiting heroes strong enough to beat it.
89% steam
Pacifish
Also idle, combat
Fish six areas, fight back against what you disturb, hatch and eat fish for stats, and craft poles, playable idly or actively for speed.
84% steam50% idle
Tiny Biomes: Cozy Idle
Also animals, idle
Tiny animals produce resources while you chop wood in a gathering area. Spend gold on a skill tree to boost your small biomes, with no timers or pressure.
84% steam
Forge MasterDormant
Also idle, combat
Forge gear across eras from the Stone Age to the Quantum Age and battle other players on a leaderboard.

Gear clickerDormant
Also idle, merge
Buy, merge and place gears to build a factory, working through levels with their own challenges.

Bee Factory!Updated
Also animals, idle
Unlock over 100 bees, sell honey and upgrade machines. Tapping speeds up the bees and earnings keep coming while you're offline.
50% idle
Idle Ants - Simulator GameUpdated
Also animals, idle
Command an ant colony that devours everything from bugs to an airplane, then upgrade workers and grow the nest.

Alien Invasion: RPG Idle SpaceUpdated
Also combat, idle
Guide an alien that eats humans to grow stronger, evolve its abilities and beat bosses in new locations.

Merge and DigUpdated
Also merge, idle
Merge pickaxes into stronger ones and drop them onto blocks to mine resources, with rewards building while you're away.
75% idle
Train Miner: Idle Railway GameUpdated
Also merge, idle
Chop trees for materials, merge carriages and lay track to expand a train empire.

Invincible: Guarding the GlobeUpdated
Also combat, idle
Recruit characters from Invincible, merge clones to rank them up, and run idle battles in the background.
75% idle
Gun IdleUpdated
Also idle, combat
Own a shooting range where you unlock dozens of guns, blast breakable targets and stack earnings multipliers into the trillions.

Dessert Factory IdleUpdated
Also idle, merge
Bake treats in a dessert factory and combine matching machines to upgrade them into ones that make fancier sweets.

Gold and Goblins – Miner GamesUpdated
Also idle, merge
Run a goblin gold mine, merging goblins into stronger miners and boosting them with collectible cards.

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

Epic Stickman: RPG Idle WarUpdated
Also idle, combat
Guide a stickman hero through a shadowy realm, picking a class and gaining power in automatic fights even offline.
75% idle
Idle Zoo Tycoon 3DUpdated
Also idle, animals
Build a zoo from one enclosure, bringing in new animals and keeping visitors happy.