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?

8 online

AlpacaBreezy286

0 total points

25m ago

BraveKeen261

40 total points

45m ago

CleverGallant907

118 total points

47m ago

QuickBuffalo972

96 total points

53m ago

WittyIcy328

33 total points

56m ago

MightyJolly169

81 total points

1h ago

WiseQuail229

27 total points

1h ago

OddQuick625

54 total points

2h ago

NobleHeron869

43 total points

2h ago

UrchinBright140

50 total points

2h 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.