Idle Summoner Invasion Guide: Castles, Gems and Tower of Infinity

Everything about invasions in Idle Summoner: Pixel RPG: Battle Points, the 228 castles in six regions, what captured castles pay, the gems for clearing each region, the player level gates, and what every Tower of Infinity pays per floor.

Invasions are the second half of Idle Summoner: Pixel RPG. On the invasion map you attack castles with your legion, one Battle Point per attack. Captured castles add monsters to your Monster Book or pay gold and souls every 60 seconds for good, even while you are away. The map has 228 castles in six regions of 38, every cleared region pays 500 to 5,000 gems, and the first five regions each open a Tower of Infinity, where you earn gold and souls for every floor you break in 60 seconds.

We make Idle Summoner, so every number in this guide comes from the game's code.

How an invasion works

• Battle Points: each attack costs one. You hold up to five, and one comes back every five minutes.
• 30 seconds: your legion has 30 seconds to break the castle, using the five skills in your invasion setup.
• One castle at a time: you attack the next castle on the map, in order.
• Invasions survive rebirth: captured castles, regions and tower records stay when you rebirth, so the stronger legion after every rebirth reaches further.

What captured castles pay

Each captured castle does one of three things for the rest of the game:

• Adds a monster to your Monster Book, which raises how high you can summon. Our monster list shows which castle unlocks which monster.
• Pays gold every 60 seconds.
• Pays souls every 60 seconds.

The income keeps running while the game is closed, at a lower rate, and the game shows it when you come back. That makes early castles worth taking even when they pay little: they pay for the rest of the game.

Six regions and their rewards

That is 15,500 gems for the whole map, enough for several artifact rolls and upgrades.

Two regions have a gate: the first castle of region 3 needs player level 150, and the first castle of region 4 needs player level 350. If yours is lower, the game asks you to raise your summoner rating. Your player level comes from rebirth, so these gates are where invasions and rebirth meet.

The Tower of Infinity

Clearing a region opens its Tower of Infinity. In the tower you have 60 seconds to break as many floors as you can, and every floor pays gold and souls. Each tower pays more than the one before:

Your best floor in each tower is saved, and a stronger legion after each rebirth pushes it higher. Our guide to endless towers explains why idle games use modes like this.

Tips for invasions

1. Spend Battle Points before they cap. Five points refill in 25 minutes; any time at five is wasted.
2. Build a separate invasion skill setup. There is no gold to steal, so use pure damage: Power of transcendence, Shout of anger, Wind Rush, Aura of battlefield and Concentrated attack. Our skills guide has the numbers.
3. Fire the boosts at the start. Every second of a boost counts inside the 30 seconds.
4. Stuck at a castle? Rebirth. A higher player level and a stronger legion are the way through, and the level gates at regions 3 and 4 need it anyway.
5. Run the newest tower. A higher tower pays far more per floor than an old one.

Idle Summoner invasion FAQ

How many castles are on the invasion map?

228, in six regions of 38.

How do I get more Battle Points?

They refill by themselves: one every five minutes, up to five.

Why can't I attack the next region?

Region 3 needs player level 150 and region 4 needs 350. Raise your player level through rebirth.

Does rebirth reset invasions?

No. Captured castles, cleared regions and your tower records all stay.

Start your invasion in Idle Summoner: Pixel RPG, free on Google Play.

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