Combine numbered tiles to add up to a goal number! Keep it up to get the highest score possible!Or challenge yourself to bringing the number down to zero in Zero Out Mode!+ Practice your addition skills with lightning speed!+ Compete on the Google Play Games leaderboards!+ Collect achievements to prove your number dominance!+ Great for the whole family!+ Rank up and gain speed in sums in Endless mode.+ Race the clock for the highest score in Countdown+ mode.+ Quickly and frantically collect numbers to subtract to zero in Zero Out mode.Based of Number + Matrix, a windows game from 2003. Now available on mobile with quick play options.