Free iPhone and iPad games: Pictorial HD, Jailhouse Jack

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.

Pictorial HD is an iPhone and iPad puzzler in which you test your spatial reasoning by uncovering hidden pictures that are concealed amid a sky of stars, a wild snow storm, a pirate's map, and more.

If you love collecting achievements, you'll be pleased to read that Apple's Game Center is on board with a bevy of achievements.

In Jailhouse Jack, you're put in charge of producing your very own jailbreak movie. So, it's your job to direct actors, ensure they're working hard, and even roll back time to undo any mistakes made during shooting.

There are 50 different screens for you to "direct and perfect", so you should busy playing Spielberg for quite some time.