Sharpen Your Mental Math With TwentyFour!

Price: \$0.99    Score: 8/10    By Shaun Campbell

A remake of a classic card game, TwentyFour! is a new math-inspired game developed by Lucid Logic LLC. With a balanced combination of mental arithmetic and problem solving TwentyFour! is sure to stimulate your gray matter.

The goal of the game is to make a total of 24 using four different numbers in combination with basic mathematical operations (+, -, x, and ÷). Each number can only be used once, but there is no constraint on using a particular operation multiple times.

TwentyFour! starts with four numbers, and gives you simple instructions to get started – “tap a number, then an operator, followed by the second number”. The two numbers will quickly merge into a new number – i.e 2 + 2 creates 4. It’s a nice feature to help you to visualize the solution, rather than having to remember the new number. You continue combining numbers until just one number is left (which is hopefully the solution, 24!). The initial instructions, along with sound effects and number options can be toggled on and off in the “Settings” menu.

There are two main game modes in TwentyFour! – Free Play and Speed Play. Free Play has no time penalties, whereas in Speed Play the aim is to solve as many problems as you can before the time runs out. Solving a bonus gives you an additional 10 secs, while passing will cost you time

There are many different puzzles to solve in the game – all with the goal of creating the sum of 24. Some problems have many solutions, others have just one. While an easy concept to learn, TwentyFour! will definitely test your brainpower. An enjoyable challenge for adults and kids alike, TwentyFour! is an especially great game for young students who will quickly learn the order of operations used in basic math while reinforcing basic arithmetic.

TwentyFour! features both local and global high score leaderboards as well as the ability to challenge your friends to a quick-think multiplayer battle via Bluetooth (3G/3G S & 2nd Generation iPod Touch only). Well worth a look if you enjoy a good brain-bender.

TwentyFour! requires iPhone OS 3.0 or later and is compatible with both iPhone and iPod Touch.