Can you defend San Francisco, California and the whole Earth? Monsters vs Aliens Tower Defense is a fun action-strategy game for kids and teens based on the hit science-fiction movie Monsters vs Aliens. The superhero Monsters must protect San Francisco and its citizens from the human-hating alien invaders. Strategically build up a first-class defense/attack system by working out the best positions on the map to place all of your brave troops (based on their artillery and skills), and protect the city from the menacing alien invaders.

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The more aliens that are eliminated by your monster allies, the more virtual dollars you earn. Use your virtual money wisely to buy, sell and upgrade your monster buddies. This tower defense-style game helps challenge and develop your decision making ability. Can you take out all of the pesky extraterrestrials?

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How to Play: Use your computer mouse to click “Play”. You have $300 in the bank to start buying monster characters, and you can place the same character in multiple positions (as long as it is within your budget). Click on a character’s icon in the top right corner of your game screen to buy that character – Click again to place your character at a vital striking position on the map. All of the defenders have different weapons and capabilities in terms of speed and range. Start off by buying “The Missing Link” and “Insectosaurus”, as they don’t cost too much.

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When you earn enough virtual dollars through whacking aliens, you can buy “B.O.B”, “Ginormica” or “Dr Cockroach”. When all of your characters are in place, click “Start” and wait for the chaotic first wave of aliens. The characters fire their own armory when they are in position, so you don’t need to shoot. You can buy, sell or upgrade existing characters during an alien assault by clicking on them. You have 20 lives to begin and you lose one life for every alien that escapes. Good Luck playing with the different characters! Tip: Upgrade your characters during the alien waves, and sell off all of the ineffective defenders.

If this Flash-based game no longer works on IE11 on your PC / MAC, try playing on Chrome or Firefox browser.

Mac Tower Defense Games

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