If the method uses the collaboration to its fullest, the various cards enable individual work on securing functionalities.
Participants draft as many functionalities degrading the user experience as they see fit, using the « UX Devil » cards (one functionality per card).
These functionalities must lead to the worst user experience imaginable.
Participants turn over an « Evil Guys » card for inspiration and continue the brainstorming. In turn, the « Evil Guys » cards are turned over and new functionalities degrading the user experience are then drafted on the « UX Devil » cards.
This phase is designed to encourage the group to imagine even more functionalities. The cards ensure that the participants have imagined numerous possibilities to degrade the experience.
For each functionality degrading the user experience written on the « UX Devil » cards, participants need to imagine one (or more) opposite functionality(ies) to ensure a pleasant user experience.
These functionalities are written on the « UX Angel » cards associated to the « UX Devil » cards.
One last phase of sharing enables each group to discuss the various functionalities that emerged. This is also the time to prioritize these functionalities.
Prioritisation can also be discussed using new methods such as assessment by vote or stickers, budget assessment or using the Kano model.