كوكب الحروف و الكلمات تدريب (Planet of Letters and Words Training) is an iPhone game developed by Osama Ahmed. This free game is designed to help children learn and practice Arabic letters and words in a fun and engaging way.

The game includes various exercises that focus on different aspects of Arabic letters and words. These exercises include searching for the letter that starts a word, finding the missing letter in a word, and practicing writing the letters of words. The game also features random tests that cover different groups of letters.

In addition to the training exercises, the game includes a fun mini-game called "TapTap," where players have to focus and tap on the alien character while avoiding the astronaut. The characters appear and disappear randomly in different areas, challenging the player's concentration skills.

Overall, كوكب الحروف و الكلمات تدريب is a great educational game for children to learn and practice Arabic letters and words while having fun.