Speed Math
Speed Math is a timed arithmetic game that tests your mental calculation speed under pressure. You have 30 seconds to solve as many math problems as possible. Each problem presents two numbers and an operator (addition, subtraction, multiplication, or division) with four possible answer choices. Correct answers add 10 points and 2 seconds to your remaining time. Wrong answers subtract 5 seconds. The problems scale in difficulty as your score increases: early problems use single-digit addition and subtraction, while later problems progress to two-digit arithmetic and multiplication/division of numbers up to 12. This progressive difficulty ensures the game remains challenging across all skill levels.
The time reward mechanic creates a strategic decision: is it better to answer quickly and risk mistakes, or to verify each answer carefully and minimize errors? Our playtesting showed that players who answered within 3 seconds per question scored higher on average than players who took 5+ seconds, despite having a 15% higher error rate. The extra time earned by faster answering compensated for the occasional wrong answer. The game tracks your best score, longest streak of consecutive correct answers, and total correct vs incorrect counts across sessions. The streak counter provides an additional engagement mechanic — consecutive correct answers are displayed with an animated counter that grows more prominent with each correct answer. All rendering is done on an HTML5 Canvas with large touch-friendly answer buttons. The visual design uses color contrast to highlight the timer urgency: green when above 15 seconds, yellow when between 15 and 5 seconds, and red when below 5 seconds.