Number Master: Merge 3D Run is a free action game developed by WeMaster LTD for Android devices. The game revolves around merging numbers to create bigger ones and defeat bosses to progress to the next level. The game is easy to understand and play, but it gets more challenging as you progress through the levels.

To play the game, you need to swipe to move your numbers and collect other numbers on the run. The more numbers you collect, the bigger and stronger you become. But be careful, as you need to avoid hammers, maces, and other obstacles to reach your goal. At each goal, a big number boss awaits you, and you need to become even bigger to defeat the evil big number and progress to the next level.

Overall, Number Master: Merge 3D Run is a fun and challenging game that will keep you entertained for hours. The game's graphics and sound effects are top-notch, and the gameplay is addictive. If you're looking for a new action game to play, give Number Master: Merge 3D Run a try!