About hexxed

hexxed is a puzzle game designed by scientists to study how we solve problems. By playing, you will contribute to a global experiment seeking to model the human creative process with unprecedented depth and clarity.

Download hexxed now!

About us

We are neuroscientists based in Lisbon and Berkeley who study how the brain shapes our behaviors in the laboratory, so that we may learn to make better decisions in our lives.

Contact us

You can reach us at thehexxedgame@gmail.com or follow us on social media with inquiries, feedback, and more. We would love to hear from you!

hexxed is developed in Lisbon, Portugal and Berkeley, USA by Gautam Agarwal, Tiago Quendera, Mani Hamidi and Zachary Mainen


In hexxed, you compete to become the best in the world.

See how you rank by playing hexxed!

Scoring rules

  • Your total score is the sum of your highest score in each of the 6 levels.
  • You have to complete a level without getting hexxed to receive a score for the level.
  • For each puzzle, you receive 1000 points for collecting it perfectly, and 0 points otherwise.
  • In order to break ties, you receive a small number of additional points based on the speed with which you complete the level.


Who is the app owner?

Gautam Agarwal

What data is being collected? How is that data being collected?

During gameplay, each user action, and its timing, is logged. In addition, the time zone, user language, IP address, device model, unique device identifier, and operating system version are collected. This data is sent to our server every time the user completes a level. Users can also access an optional survey where they are asked questions about gender, age, and personality.

Users are asked for consent the first time they open the app. All data collection procedures were approved by the ethics committee of the Champalimaud Foundation in Lisbon, Portugal.

For which specific purposes are the data collected? Analytics? Email Marketing?

We use the data in an anonymous fashion for a scientific research project whose objective is to model players’ decision making process, and how it correlates to the characteristics of the player (their gender, age, personality, geographic location, and native language). The IP address is collected to identify the geographic location of subjects, and their unique device ID is used to associate all level attempts to the same (anonymous) player. There are no additional financial or commercial interests. The data is not used by us for any other purposes.

Which third parties will have access to the information? Will any third party collect data through widgets (e.g. social buttons) and integrations (e.g. Facebook Connect)?

No third parties will have access to the data collected.

What rights do users have? Can they request to see the data you have on them, can they request to rectify, erase or block their data? (under European regulations most of this is mandatory).

Users can request to withdraw from the study and have their data erased. To do so, please email us at thehexxedgame@gmail.com and include the numbers in the game’s ABOUT tab. Upon request, no record of the data will be kept.

Description of process for notifying users and visitors of changes or updates to the privacy policy

Any updates to this policy will be posted on our website (hexxed.io)

Effective date of the privacy policy

24 November, 2020


You routinely make choices that are much more complex than they seem. Right now, in choosing to play this game you may wonder: Is it worth my time? Could I be doing something better? Your memories, desires, and imagination weave together in a mysterious way as you ponder. So, how do you choose?

We made hexxed to study this question. We designed the game so that it is simple enough to study scientifically, yet complex enough to challenge the mental abilities of human players. Now we aim to collect data from tens of thousands of players like you. Why? Because mapping the creative impulse that fuels intelligence requires many repeated observations. Each of you arrives at the game with a unique history and tendencies, meaning that you can interpret the game in highly diverse and fluid ways. Nonetheless, based on our work in the lab, we believe that the commonalities across players will outweigh the differences, allowing us to map a territory of intelligent play, and see how people move through it.

Within one year, we will share our findings here, so that you may see how you and your fellow humans solve problems.

Ready, player 1?

This study is funded in part by Champalimaud Foundation and Bial.