Leaderboard
Blog Survey Study Terms of Service Contact
Color Mode

English

Sum Game - Moadly: 60 Free Brain Training Games

Sum

Sum all the numbers before the timer runs out.

How to play Sum?

13 online

NimbleHappy386

22 total points

2m ago

TidyRough489

69 total points

14m ago

EagerGlowing610

50 total points

30m ago

WolfUnique594

157 total points

34m ago

LemurHappy250

22 total points

38m ago

FancyRaccoon826

27 total points

45m ago

EagerGoose173

151 total points

46m ago

SassyJazzy216

18 total points

51m ago

MooseVast452

98 total points

57m ago

HawkFalcon590

18 total points

58m ago

Sum is a straightforward speed-math game. If you're tired of reaching for a calculator for every little thing, this is a quick way to get your head back in the game. It’s fast, it’s stripped down, and it actually makes you think.

Quick Math Without the Fluff

Name: Sum by Moadly
Rating: 4.5 (226 reviews)
Author: Moadly

The goal is simple: add up the numbers on the screen before the timer runs out. Every time you get one right, the next round adds another number to the mix. It starts off easy, but the board gets crowded pretty quickly.

How it works

Add the numbers on the screen.
Beat the 20-second clock.
Each win adds a new number to the next round.
One mistake or a timeout and you're done.

"Sum really keeps me on my toes. Twenty seconds goes by fast, and it forces me to think clearly."

- QuickOtter91

"Simple idea, but surprisingly intense. The extra numbers each round make it addictive."

- BrightFalcon77

It’s built to run right in your browser so you can play a round whenever you have a minute. No setup, no waiting. Just a quick test to see how fast you can actually crunch numbers when the clock is ticking.

Brain Games

Memory

Focus & Clarity

All Ages

Disclaimer: We cannot guarantee that the games will improve brain function, prevent or cure memory loss, or any other condition. Nothing in app is medical advice and reflects personal, subjective experiences only. Treat the app as a game.