Number Master: Run and Merge is a free game developed by KAYAC Inc. for the iPhone platform. This game challenges players to create big numbers by merging smaller ones and reaching the goal. The game is played by swiping numbers around the stage, absorbing smaller numbers to grow your own, and avoiding larger numbers that can cause you to lose progress.

In addition to merging numbers, players must also navigate obstacles such as electric saws, bridges, and ditches to reach the goal. Once at the goal, players will encounter walls that can only be broken with big numbers. The game features a variety of levels with increasing difficulty, providing hours of fun and challenging gameplay. Overall, Number Master: Run and Merge is an entertaining and addictive game for players who enjoy puzzles and strategy games.