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Idle Monster TD: Evolved cover art
Steam

Idle Monster TD: Evolved

2022

A reverse tower defense where you evolve over 150 monsters to hold a portal against endless human invaders, placing them to combine abilities.

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At a glance

From the developer's own description, reviewed Sep 29, 2026. Suggest a correction
EndlessEnding
∞Time to finish
75%Idle (0 = active)
?Offline progress
?Prestige layers
?Save export
?Plays on mobile
FreePrice

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Live signals

76%Steam positive · Mostly Positive
1,254Steam reviews

Pulled from the Steam store.

Tags

Tower defenseCollectionFantasy

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Idle Monster TD: Evolved: common questions

Does Idle Monster TD: Evolved have an ending?

No. Idle Monster TD: Evolved is built to keep going: there's no final screen, just further layers, upgrades and records to chase.

Is Idle Monster TD: Evolved an idle game or an active one?

Leans idle: we rate it 75 on a scale where 0 means fully active and 100 means it plays itself. Checking in a few times a day is enough.

Is Idle Monster TD: Evolved free?

Yes, Idle Monster TD: Evolved is free to play.

Where can you play Idle Monster TD: Evolved?

Idle Monster TD: Evolved is available on steam.

What games are like Idle Monster TD: Evolved?

Endless Frontier - RPG, Idle Big Devil and The Girl's Moving Castle share the most with it. Endless Frontier - RPG: also fantasy, collection. All games like Idle Monster TD: Evolved →