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Object of Play
The object of this game is to generate constructive feedback.

Number of Players: Any

Duration of Play: 10–45 minutes

How to Play
Make two columns: one for “plus” and one for “delta” (the Greek symbol for change).

1. Ask the group to reflect on what was positive or repeatable about an activity and capture their thoughts under the “plus” column.

2. Ask the group then to brainstorm about what they would change about it, and capture these under the “delta” column.

This feedback method can apply to any activity, idea, work product, or action. By focusing on change as opposed to direct negatives, the group will be more likely to share its true assessment while also generating improvement ideas.

The earliest known use of the Plus/Delta game is at The Boeing Co circa 1980.

Online Plus/Delta

Plus/DeltaHere is another image of the Plus/Delta Game. But this one is special – clicking on this image, will start an “instant play” game at In this game, there will be two icons that you can drag on your online Plus/Delta Chart:

  • Pluses: Use these to capture positives.
  • Deltas: Use to capture what you’d like to change.

We’ve organized this game into three regions: High Impact, Medium Impact, and Low Impact. As you’re placing these items, use these regions to help you keep track of the most important ideas.

Keep in mind that that this is a collaborative game. This means that you can invite other players to play. And when they drag something around – you’ll see it in real time!

3 thoughts on “Plus/Delta

  1. Plus Delta has been in use that I know for over 30 years. Boeing is the first company that I know used it. Perhaps someone there can confirm that.

  2. Thanks Hal. Updated the source to reflect this information. If you learn anything more please let us know.

  3. […] improve feedback, Strategic Aesthetics provides it’s own critique guide. Using the Plus/Delta format, this guide aims to pull out both the strengths and weaknesses of a project, regardless of […]

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