Idle Monster: Tower Defense
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About Idle Monster: Tower Defense
Idle Monster: Tower Defense is a tower defense game in which you command the United Monsters Alliance and defend your homeland from robot invaders. Place monsters to attack the machines and protect your base, combining their elemental skills and passive boosts. The game can play itself while you are away, earning gold offline, but choosing effective defenses and combinations takes strategy.
Monsters and defenses
You can unlock 44 monsters from the Water, Air, Earth and Fire elements, each with different skills. Place up to 10 monsters at a time, using their abilities and passive boosts to build a strong tower synergy. Defeating robots unlocks more monsters and grants upgrades to power, speed and other stats. You can also develop your defenses with upgrades, research, spells, artifacts, relics and technology, using a variety of resources, or clear the map with a firestorm spell.
Maps and activities
The game has 8 maps, each calling for different defensive strategies. Alongside its endless gameplay, it includes bi-weekly PvP tournaments, daily missions, achievements and mini-games such as Drone Swarms, Cargo Ships and Tech Ships. You can battle robots and monsters, take on bosses and compete for leaderboard positions.
World and presentation
Idle Monster TD takes place in a fantasy RPG-based world with classes and cute pixel artwork. Its monster roster includes creatures such as water sprites and fire devils.
Frequently asked questions
Yes. Idle Monster: Tower Defense is free to play on Steam, so there is nothing to buy to start playing.
The minimum requirements for Idle Monster: Tower Defense are: Windows 7, 2 GB RAM, 200 MB storage. It also runs on macOS. The recommended specs are in the System requirements section.
No. Idle Monster: Tower Defense is a single-player game.
Mostly, yes. Valve rates Idle Monster: Tower Defense as Playable on the Steam Deck: it runs, but may need some manual setup.
Yes. Idle Monster: Tower Defense is the full base game. You need nothing else to play it.











