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Invaders Tower Defense Online

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  1. Steam2.0 · 560 reviews
    $2.99View Offer

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About Invaders Tower Defense Online

Invaders Tower Defense Online (ITDO) is a strategy game in which you build towers to defend against invaders and send attackers against your opponents. You start with 400 credits and 100 lives, then receive 200 credits each round. Each round lasts 12 seconds; invaders that cross the board reduce your lives, while sending raiders costs credits and increases your income.

Towers and invaders

You can choose from over 15 types of towers, each with its own characteristics and abilities, and place them strategically. More than 30 kinds of attackers have their own abilities and weaknesses.

Maps and game modes

The game includes over 10 maps, each with its own challenges. You can play in several modes:

  • 1v1 Duel Mode: compete against another player.
  • 2v2 Team Mode: team up with a friend against another duo.
  • Free-for-All (FFA) mode: compete against every other player and try to be the last one standing.
  • Matches against AI: play against artificial intelligence.
  • Defense Mode: survive as long as possible against waves of increasingly stronger invaders.

Frequently asked questions

Steam lets publishers create keys to sell in other shops. Once you activate a key, the game is yours to keep, just like a store purchase.

Disclaimer: CD keys have an inherent 1–2% average failure rate. Check the shop terms for buyer protection info. Steam offers no buyer protection for keys bought in other shops and doesn't refund them.

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