IGN is now offering Bloons Tower Defense 5 for iPhone/iPod and the HD version for iPad as its free game of the month. These titles typically go for $3 and $5 respectively, with today’s price drop being only the second time the iPhone version has gone free and the first instance for the HD rendition. You can now download this game for free on iOS for iPhone or iPad.

Follow along as the Bloons build towers and try to protect their fortress from enemies. There are three different games modes and four separate skill levels, including a family friendly mode for everyone to play. See the full description below.

Check out our daily game/app roundups for more discounted and free iOS deals including the original Infinity Blade for free50% off the new Scanner Pro 6, free downloads of cooking app Green Kitchen ($5 value) and Star Walk 2 is the Apple free App of the Week. You’ll also find this month’s console freebies in our Xbox Live and PlayStation Plus roundups.

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Five-star tower defense with unrivaled depth and replayability. Latest update includes the all new Sprint Track map!

The Bloons are back and this time they mean business! Build awesome towers, choose your favorite upgrades, hire cool new Special Agents, and pop every last invading Bloon in the best ever version of the most popular tower defense series in history.

Featuring an all New Tower and Special Agent, glorious retina graphics optimized for iPhone 5, original Tracks and Special Missions, a whole new tier of Specialty Building upgrades, and a never-before-seen Monkey Lab to upgrade your towers, Bloons TD 5 delivers hours of fun and challenging play to fans and new players alike.

“Nations need to brace themselves for a complete loss of productivity” – Jayisgames, 4.7/5.0

More Awesomer New Features: – A brand new tower – Heli Pilot – Exclusive new Special Agent – Radadactyl – All new Monkey Lab – researches unique abilities and tower upgrades – Specialty Building Tier 4 Upgrades – Exclusive tracks

Hours and Hours of Awesome Gameplay: – 21 powerful towers with Activated Abilities and 2 upgrade paths – 10 Special Agents – 40+ Tracks – 10 Special Missions – 250+ Random Missions – New Bloon enemies – tougher Camos, Regrower Bloons, and the fearsome ZOMG – 50+ Game Center Achievements and Challenges – iCloud Support – 3 different game modes – Freeplay mode after mastering a track – 4 difficulty settings and family-friendly theme so anyone can play

And that’s just the beginning – heaps of planned updates will keep Bloons TD 5 fresh, fun, and challenging for many months to come. Now it’s time to pop some Bloons!

Remember to save to iCloud after each victory or purchase to save your progress.

Requires 3GS minimum, and of course optimized for iPhone 5 and iPod Touch 5.

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