Math quiz / Calculator quiz

This is a game where you solve calculation problems displayed on the screen.
Try playing it once.
You will find out your abilities.
You have 3 minutes, and your time will decrease as time passes.
If you answer correctly quickly, your time will be added.
Conversely, if you get it wrong, your time will be subtracted.
When your time reaches 0, the game is over.
I assure you.
You will be pressed for time and will make mistakes.
You will be pressed for time and will panic.
I guarantee that you will panic within the first minute.
Do you understand how long your concentration lasts?
Playing this game will help you understand how short your concentration lasts.
Have you ever lost concentration and panicked?
You will experience how panicking it becomes impossible to solve simple calculations that anyone can solve.
Play seriously for 3 minutes.
Then you will find out your abilities.

Rules
- If you answer correctly before the gauge in the center of the screen disappears, +5 seconds will be added to your time

(If you get it wrong, -5 seconds will be subtracted)

- Once every 5 questions you get a bonus chance,

If you answer correctly quickly, +10 seconds will be added to your time

(If you get it wrong, -10 seconds will be subtracted)

- If you get a bonus chance, even if the gauge disappears, if you answer correctly, +3 seconds will be added

- The game ends when the time displayed at the top of the screen reaches 0

- If you want to pause the game, press C repeatedly.


If you keep answering correctly quickly, a huge amount of time will be added.

Even at the end of the game, if you answer within 3 seconds, you have a chance to add +10 seconds, so you can always turn a pinch into an opportunity.

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The game has three modes for both addition and subtraction,

and an edit function is also available.

Customers can freely create their own calculation problems.