Hidden value
Quote a two-way price on a value you cannot see. Bots trade with you, and some of them know more than you do.
Practice / Games
Games
Trade against bots, or train memory, attention and spatial sense. Every game comes from a seed and ends with an honest reading of how you did.
Market games
Trade against bots with their own habits. Every deal comes from a seed, and every round ends with what your decisions were worth.
Card market
A maker quotes the sum of a hand, part of it face down. Buy, sell or skip before the clock runs out.
Dice market
Make a market on the sum of the dice as they land one by one, and carry your inventory through every roll.
Betting board
Three bookmakers price the same event. Find a set of bets that wins whatever lands, or pass.
Cognitive games
Timed games for memory, attention and spatial sense, the kind some firms screen with. The level follows your answers, so each one stays at the edge of what you can do.
Pincode memory
Digits flash one at a time. Type the code back as shown, reversed or sorted, while it grows with every right answer.
Task switching
One number, two possible questions. Answer the one on screen, and keep your speed when the question changes.
Response inhibition
Go with the middle arrow, ignore the arrows beside it, and press nothing when the row is boxed.
Working memory
Letters arrive one by one. Say whether each matches the letter a set number of steps back.
Spatial reasoning
A flat net of six lettered squares and four cubes. Fold the net in your head and find the one cube it can make.