Memory Challenge description

Features
* Matching Card : By open two cards with the same symbol, you can clear them. There are many levels and multiple modes:
　- Easy: No pressure. You could play it easily.
　- Limited Time: All cards must be cleared in a limited time.
　- Flash: Show you all cards and then cover them. You must open them correctly by your impressions. It has wrong times limit.

* Alphanumeric : You must remember a string in a limited time. There are many levels and multiple modes:
　- Pure Number: The string is composed by 0~9.
　- Pure Letter: The string is composed by A~Z.
　- Letter and Number: The string is composed by 0~9 and A~Z.

* Color : Some games use color cards. There are many levels and multiple modes:
　- Color Location: Remember the location of all cards, and find out all specified color cards after they are covered. It has wrong times limit.
　- Color Order: The color cards will appear one by one, You must remember them in order.

If you have any question, you could add comment to my fackbook.
https://www.facebook.com/karryapps/posts/372857029744824