Games

A simulation of Optiver's Code Compare interview challenge meant to test your memory and reaction time. You'll be shown progressively longer and more complex strings. Your goal is to remember what you just saw, and recall it correctly before time runs out.

Practice Optiver's 80 in 8 with a shortened 50 in 5 - fifty math problems in five minutes. Test your mental math skills, and see where you rank relative to your competition. How sharp are you really?

Math 24 is a survival-based mental challenge inspired Optiver's online assessment. It tests the exact skills that matter in high-performance environments: speed, precision, and creative problem-solving under pressure. Can you turn four numbers into 24 using only arithmetic operations?

Mastered Math 24? Now give Hardcore mode a try; this mode reflects how quickly Optiver expects you to solve each problem, but with a bit of forgiveness. You're given three lives, and as the timer elapses you'll lose one life. The run is over when you're out of lives. Time is now your enemy, and the stakes are higher.

Remember Optiver's burger flipping game? They replaced it with this. How quickly can you react to market signals? This click-trade simulation puts your reaction time to the test.

A simulation of Optiver's Shape-Match game, with an extra dimension of color for increased difficulty. If you can pass Color-Shape match, you can smash Shape-Match when the time comes!

Optiver's Pincode game, with a challenging twise. There's no win-condition, and the amount of memorization and sequencing changes to exponentially increase difficulty.

Optiver's 'Smart Guess' assessment, a memory based game in which you need to strategize in your limited guesses to identify a hidden pattern. You have 5 tries, can you put the pieces together?