Free iPhone and iPad games: Gravity Maze, Tilt World

Welcome to another instalment of Pocket Gamer's free game round-up - a feature that highlights the top App Store titles that have been made free in the past 24 hours.

As we've stated many times before, prices in the App Store change frequently. Grab these freebies before you miss out on a top bargain.

Remember to let us and your fellow readers know about any other great free apps in our comments section below.

Additionally, you can find out about all the latest App Store updates, price drops, and more by using the cleverly hidden hyperlink in this paragraph.

And if you're craving even more quality freebies, be sure to check out the Free App Alliance iPhone app for daily recommendations of the best free apps the App Store has to offer.

This physics-based puzzler gives you the ability to flip the game's world upside-down. You have to use this unique skill to help a team of Fluffs escape from a range of mysterious mazes.

Gravity Maze features 45 unique levels that are spread across three different worlds - all of which alter the gameplay slightly.

And, yes, unlike the last time this game featured in our daily free game round-up, it's actually available for free. As in nada... zilch... gratis.

Tilt World is a puzzle game in which you take on the role of a young tadpole called Flip, who's on a mission to end climate change once and for all.

Basically, then, you have to gobble up harmful substances from the air and plant seeds to restore a glen back to its former glory.

As you play, XEOPlay's 'business' partner WeForest will mirror your actions by planting one million trees in Madagascar.