77 methods
Jonathan Courtney (AJ&Smart Berlin)

Lightning Decision Jam (LDJ)

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The problem with anything that requires creative thinking is that it’s easy to get lost—lose focus and fall into the trap of having useless, open-ended, unstructured discussions. Here’s the most effective solution I’ve found: Replace all open, unstructured discussion with a clear process.

What to use this exercise for: Anything which requires a group of people to make decisions, solve problems or discuss challenges. It’s always good to frame an LDJ session with a broad topic, here are some examples:

  • The conversion flow of our checkout
  • Our internal design process
  • How we organise events
  • Keeping up with our competition
  • Improving sales flow
Gamestorming methods

Impact and Effort Matrix

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In this decision-making exercise, possible actions are mapped based on two factors: effort required to implement and potential impact. Categorizing ideas along these lines is a useful technique in decision making, as it obliges contributors to balance and evaluate suggested actions before committing to them.

Hyper Island


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Dotmocracy is a simple method for group prioritization or decision-making. It is not an activity on its own, but a method to use in processes where prioritization or decision-making is the aim. The method supports a group to quickly see which options are most popular or relevant. The options or ideas are written on post-its and stuck up on a wall for the whole group to see. Each person votes for the options they think are the strongest, and that information is used to inform a decision.

Gamestorming methods

20/20 Vision

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The 20/20 Vision game is about getting group clarity around which projects or initiatives should be more of a priority than others. Because employees’ attention is so often divided among multiple projects, it can be refreshing to refocus and realign more intently with the projects that have the biggest bang for the buck. And defining the “bang” together helps ensure that the process of prioritization is quality.

Thiagi Group

TRASH: Goal-setting Simulation


This simulation game consists of six rounds of activity, each involving a different participant. A mini debriefing discussion is undertaken immediately after each round to identify the emotional impact of the type of goal statement used during the round and to relate the experience with workplace events. The final activity requires participants to apply their insights to the specification of work-related performance goals.

Thiagi Group

Decisions, Decisions…

When it comes to decision-making, why are some of us more prone to take risks while others are risk-averse? One explanation might be the way the decision and options were presented. 

This exercise, based on Kahneman and Tversky's classic study, illustrates how the framing effect influences our judgement and our ability to make decisions. The participants are divided into two groups. Both groups are presented with the same problem and two alternative programs for solving them. The two programs both have the same consequences but are presented differently. The debriefing discussion examines how the framing of the program impacted the participant's decision.

Gamestorming methods

100$ Test

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In this method of prioritization, participants assign relative value to a list of items by spending an imaginary $100 together. By using the concept of cash, the exercise captures more attention and keeps participants more engaged than an arbitrary point or ranking system.