Description
Build your fortress, and defend it to the end! 

Block Fortress gives you the freedom to create a stronghold in almost any way you can imagine, and then puts you in the middle of the action trying to defend it from the relentless attacks of the menacing Goblocks! Put your skills as both a builder and a fighter to the test as you try to survive as long as you can!

Features:

• a unique mix of TD and FPS gameplay
• complete freedom to build your base any way you choose, from towering fortresses, to sprawling castles
• customize your blocks, weapons, and equipment using a massive crafting system
• team up with your friends in 2-4 player cooperative multiplayer
• fortify your walls with over 30 different building blocks
• defend your base with 16 advanced turret types
• gear up your avatar with tons of weapons and equipment
• lots of support blocks - including power generators, depth charges, land mines, spotlights, teleporters, and more
• day and night cycle - build lights and spotlights to prepare yourself for the harsh night!
• several game modes, including a "free build" sandbox mode and a more intense survival mode
• 6 different types of terrain to conquer
• upload and share your creations, and download others 
• up to 4 player cooperative multiplayer

What's new in Version 1.3.1
Fixed a bug that would cause display issues for iPhone 4, iPod Touch 4, iPhone 3gs, and iPad 1. Also fixed a bug in how the data was being submitted to the leaderboards in co-op mode. Sorry guys...

And in case you missed it, co-op multiplayer is finally here! 

• added GameCenter co-op multiplayer with support for up to 4 players
• added the ability to create, upload, and download maps for use in co-op games
• added two new flat terrain types - swamp and tundra - with rare blue and white minerals
• added two new bots - a long-range sniper bot and a FREE light bot
• added a new storage crate box (handy for storing and transferring resources in multiplayer games)
• optimized save game files so downloading and uploading should be much faster (for games saved starting from version 1.3 and later)
• fixed a bug that would cause you to stop shooting when you started to fall
• fixed a bug that would cause land mines to explode when you or your bot walked on them
• fixed a bug that would cause shotgun to shoot only one bullet
• fixed a bug where some terrain would be missing a corner block, allowing you to fall through the ground into oblivion
• fixed a bug that would cause some supported blocks to fall when deleting nearby blocks
• fixed a bug that would cause enemies to get stuck when they fell into water
• increased the reload time of heavy plasma