iPhone And iPad Apps Gone Free: Finger Physics: Thumb Wars, Catapult Madness, Cave Run, And More

Today's AGF list includes a finger twisting physics-based puzzle game, a peasant launching game that includes Game Center integration, a universal endless running game, and much more. Disclaimer: All prices are subject to change at any time and without notice regardless of stated free duration. iPhone: Finger Physics: Thumb Wars ($.99 -> Free): Like the original Finger Physics, except in this one you will compete with other fingers for total world domination. The game features a total of 90 levels with more to come, multiple game modes, and OpenFeint integration. Finger Physics: Thumb Wars is available for free today only (10/20). It has a three-and-a-half-star rating and a total of 156 ratings. Catapult Madness ($.99 -> Free): The goal of the game is to launch peasants to the neighboring castle in order to ask for help, but it's no easy task. You will need to time your launch perfectly and use a variety of objects and upgrades to achieve your goal. The game features four characters, five power-ups, tons of different upgrades, and Game Center integration. Catapult Madness is available for free for a limited time. It has a four-and-a-half-star rating and a total of 51 ratings. Perfetto ($.99 -> Free): Identical to the matching game you played as a child, only in digital form. Set the timer and drag the pieces into their correct spots as quickly as possible. The game features online leaderboards to compare your matching skills with the rest of the world. Perfetto is available for free for a limited time. It has a four-star rating and a total of 47 ratings. Crazy Basketball ($.99 -> Free): An arcade basketball game that will have you lining up shots and trying to make the most in two minutes. The game features score bonuses for making consecutive shots, slow motion effects, a training mode, and Game Center integration. Crazy Basketball is available for free for a limited time. It has a three-star rating and a total of 8,202 ratings. Happy Sex with Maryline: Sexuality Coaching and Education Guide for Adults ($19.99 -> Free): Provides you with authentic daily coaching sessions with Maryline (no "dirty" stuff, just helpful content). It takes about 5-10 minutes per day for 30 days to complete. The app is intended for anyone over the age of 17, and can be password locked so your children can't access it. Happy Sex with Maryline is available for free until the end of the month. It has a four-star rating and a total of 10 ratings. X Invasion 2: Extreme Combat ($2.99 -> Free): A 3D arcade-style flight combat game where you are tasked with defending San Francisco from hostile aliens. The game features refined tilt controls, 16 campaign missions, survival mode, tour mode, and OpenFeint integration. X Invasion 2: Extreme Combat is available for free today only (10/20). It has a three-star rating and a total of 17 ratings. PixelCross ($.99 -> Free): A logic-based puzzle game that requires you to fill in the board based on the numbers on each column and row. The game features four board sizes, 180 games with varying difficulties, a level editor, leaderboards, and a tutorial for those unfamiliar with the game. PixelCross is available for free for a limited time. It has a three-and-a-half-star rating and a total of 182 ratings. Universal: Cave Run ($.99 -> Free): An endless running game where you must tap to jump to avoid falling down the holes. The game also contains a handful of obstacles to avoid, simple jump mechanics, and OpenFeint integration. Cave Run is available for free for a limited time. It has a three-and-a-half-star rating and a total of 55 ratings. iPad: LetsTans Premium ($2.99 -> Free): It's tangrams for your iPad. Solve 700 hand-crafted puzzles while using 550 shapes. The game features six modes of play, multiple levels of difficulty, seven skins to choose from, an advanced hint system, and more. LetsTans Premium is available for free today only (10/20). It has a three-and-a-half-star rating and a total of 50 ratings. Developers: If you are a developer who would like to get your app included in our “Apps Gone Free” daily lists, here’s our basic set of rules:

The app must be free for at least one whole day.
It must have at least a three-star rating at the time it goes free.
The app must not have been free numerous times (3+) over the last six months.

To submit an app, simply send a request to tyler@appadvice.com with the subject “Apps Gone Free.” Please include the name of the app, a link to it in the App Store, when you intend to offer the app for free and anything else you would like to share. We will take it from there.