Number Master: Run and merge

Growing a number until it can smash through walls is the simple hook of Number Master: Run and merge, an action runner from KAYAC Inc. The player controls a number rather than a character, and the aim is to make it as large as possible before the finish line.

Swiping steers the number around each stage. Touching a smaller number absorbs it and adds to your total, while colliding with a bigger one costs you the number and sends you back to the start, so every run is a quick judgement about which targets are safe. The course also throws in electric saws to dodge, bridges to cross and ditches to jump. At the end, a row of walls waits, and the bigger the number that arrives, the more of them it can break before the run is over.

Players seem to like it: the game averages 4.4 from 201,328 ratings, 72% of them five stars and 7% one star, and installs have passed 100,000,000+. It is free with ads, and in-app purchases cost $4.99 to $6.99 per item. The most recent update is dated 2026-09-19, Android 6.0 or later is required, and the rating is Teen. We list 22 versions; the latest, 2.3.8, weighs 81.1 MB.

This is a good fit for short sessions and anyone who enjoys quick risk-and-reward decisions. Players looking for depth or a long campaign will find the idea fairly thin.