Agile and Scrum for Video Game Development

Scrum forVideo Game
Development
1

Founding member and
director of Agile Alliance,
Scrum Alliance, and Agile
Project LeadershipNetwork
Founder of Mountain
Goat Software
Consultant, author,and speaker
Mike Cohn - background
© Mountain Goat Software, LLC
2

What is Scrum?
One of the agile processes
Iterative and incremental
Produces demonstrable working software every two
to four weeks
Results- and commitment-oriented
Not a silver bullet
Has a long history of success on a wide variety of
projects, including video game development
3

Why Scrum for game development?
Reduce wasted effort
Minimize crunch periods
Find the fun faster
Time
%of“Fun”Known
Design
Pre-production
E3 demo
Production
Beta
4

Project noise level
Simple
Complex
Anarchy
Com
plicated
Technology
RequirementsFar from
Agreement
Close to
Agreement
Closeto
Certainty
Farfrom
Certainty
Source: Strategic Management and
Organizational Dynamics by Ralph Stacey in
Agile Software Development with Scrum by
Ken Schwaber and Mike Beedle.
Pre-production
Production
5

The Scrum project community
Programmer Programmer
Artist
Programmer
Tester
Tester
Animator
Artist
The
team
Internal
director
Publisher
producer
Product
Owner
Scrum
Master
Anyone
(not an
authority role)
6

Scrum roles and responsibilities
Defines the features of the product, decides on release date and content
Is responsible for the profitability of the product (ROI)
Prioritizes features according to market value
Can change features and priority every sprint
Accepts or rejects work results
Product
Owner
Ensures that the team is fully functional and productive
Enables close cooperation across all roles and functions and removes
barriers
Shields the team from external interferences
Ensures that the process is followed. Participates in daily scrum, sprint
review and planning meetings
Scrum
Master
Cross-functional, seven plus/minus two ideally full-time members
Selects the sprint backlog
Has the right to do everything within the boundaries of the project
guidelines to reach the sprint goal
Organizes itself and its work
Demos work results to the Product OwnerTeam
7

Scrum
Swim
Crouch
Jump
Sprint
2-4 weeks
Jump
Sprint goal
Sprint
backlog
Incrementally
improved game
Product
backlog
FlySwim
Fly
Crouch
24 hours
8

“Scrum facilitates feature iteration, allowing teams
to deliver polished, tuned and integrated features
which can be used to test the creative quality of
the game throughout its development, allowing the
team to incorporate audience feedback as early as
possible in the development process.”
Scrum is iterative
Chris Ulm
High Moon Studios
9

Sequential vs. overlapping
development
Source:“The New New Product Development Game” by Takeuchi
and Nonaka. Harvard Business Review, January 1986.
Rather than doing all of
one thing at a time...
...Scrum teams do a little
of everything all the time
10

A sample product backlog
Backlog item Estimate
As a player, I want the camera to stay oriented when it
collides with bushes.
3
As a player, I want to perform a false compliance within
the apprehend window to defeat the cop and avoid arrest.
5
As a player, I want punches, reactions and blocks
3
As a player, I want to see a clear representative HUD that
is art directed to match the game’s universe.
8
As a CTO, I want an easy to use functional test framework
so that programmers / testers can write tests.
5
As a player I want to see enemies get knocked down and
get back up.
30
11

The product backlog iceberg
Sprint
Release
Future
Releases
Priority
12

Detail is added as an item moves
up the iceberg
As a player I want
to see enemies have
hit reactions when
I melee them.
As a player, I want
enemies to have
animated reactions
when I hit them.
As a player, I want
enemies to have
physical reactions
when I hit them.
As a player, I want
there to be collision
detection when I
melee an enemy.
the backlog item
13

As a player, I want enemies to
have physical reactions when I
hit them. An enemy twists left when hit
on the left and right when hit
on the right.
The enemy staggers back
when hit in the center.
The enemy tilts back when hit
in the head.
And then later by adding “Conditions of
Satisfaction” to the backlog item
14

As a player I want to
see enemies get knocked
down and get back up.
✓Head shots knock AI
down
✓AI can get back up
from any position and
continue fighting
✓ Can melee with a button
press using existing
assets
✓ Same hit reactions as
being shot in the area
of the body
Additional examples
As a player, I want to
be able to melee the
vampire boss.
15

The sprint cycle
SprintRetrospective
Daily Scrums
SprintReviewMeeting
SprintPlanningMeeting
SprintPlanningMeeting
Body Text with a bullet and 16

Product owner describes priorities
Team breaks product backlog items (features)
into tasks
Team commits to some amount of work
Sprint planning meeting
Three questions:
What did you do yesterday?
What will you do today?
What’s in your way?
A commitment between peers, not a management
status meeting
Daily scrum
17

Team demonstrates what was accomplished
2-hour prep time rule
No PowerPoint!
Anyone can attend
Sprint review meeting
Focus on continuous improvement
Look back at the last sprint and ask what would
we like to:
Start doing
Stop doing
Continue doing
Sprint retrospective
18

A sprint backlog
Tasks
Create close punch
animations for attackers
Create close punch
animations for responders
Fix camera bouncing off
walls
Polish audio
Mon
8
16
8
12
8
Tues
4
12
16
8
Wed Thur
4
11
8
4
Fri
8
8
Tune attack percentage in
AI
8
10
16
8
8
19

Reciprocal commitments
The team commits to delivering
some amount of functionality
The business commits to leave
priorities alone during the sprint
20

No changes during a sprint
What the team commits to—and what the
product owner agrees to—during sprint
planning should be what is delivered
We start with vague requirements
Our understanding of those requirements is
However, keep in mind that...
21

Abnormal terminations
If change cannot be kept out of a sprint...
The sprint may be abnormally terminated
An extreme circumstance, not done very often
Raises visibility of priority changes
...they feel they cannot meet the goal of a sprint.
Team can abnormally terminate if...
...priorities change.
Business can abnormally terminate if...
22

Burndown charts
Primary method of tracking progress
A burndown chart shows how much work is
left as of various dates
Two types
Release burndown
Sprint burndown
23

A sprint burndown chart
0
200
400
600
800
1,000 4/29/02
5/6/02
5/13/02
5/20/02
5/24/02
Hours
24

Hours
40
30
20
10
0
Mon Tue Wed Thu Fri
Tasks
Create punch animations
Fix camera bouncing off walls
Polish audio
Tune attack percentage in AI
Mon
8
16
8
12
Tues Wed Thur Fri
4
12
16
7
11
8
10
16 8
50
25

Task boards
As a user, I...
8 points
Story To Do
In
Process
To
Verify Done
Code the...
9
Code the...
2
Animate the...
8
As a user, I...
5 points
Code the...
8
Code the...
4
Model the...
6
Code the...
4
Test the...
8
Code the...
8
Code the...
MC 4
Test the...
SC 8
Code the...
DC 8
Test the...
SC 8
Test the...
MC 8
Code the...
LC 8
Test the...
SC 4
Test the...
8
Code the...
8
Test the...
4
Test the...
8
26

Burndown
chart
Tasks
to do
Product
backlog
Completed
tasks
27

28

Release planning on long projects
On a multi-year game, break the total project into a
series of shorter interim internal “releases”
Three months is a good horizon
For each release, establish one or a few BHAGs (Big
Hairy Audacious Goals)
Sprint1
Sprint2
Sprint3
Sprint4
Sprint5
Sprint6Release 1
Sprint7
Sprint8
Sprint9
Sprint10
Sprint11
Sprint12
Release 2
29

Scrum of scrums
30

Scrum of scrums of scrums
31

Augment with orthogonal teams
Beyond a certain team size, augment the team structure
with orthogonal, virtual teams
Programming team
Audio team
AI team
Informal or semi-formal at best
Meet periodically
Discuss and resolve issues related to their specialty
May want to work off their own team backlog
32

Programmers
Animators
Testers
ScrumMasters
Audio engineers
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Upcoming public classes
Date What Where
February 26-27
February 28 Agile Estimating and Planning
Seattle
April 8-9
April 10 Agile Estimating and Planning
Dallas
June 3-4
June 5 Agile Estimating & Planning
Reston,VA
(DC area)
July 29-30
July 31 Agile Estimating & Planning
San Diego
European classses in London, Oslo, Stockholm in 22008
Register at
www.mountaingoatsoftware.com
34

Mike Cohn contact info
mike@mountaingoatsoftware.com
www.mountaingoatsoftware.com
(303) 810-2190 (mobile)
35

Agile and Scrum for Video Game Development

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