0

Safe Harbor Statement

This presentation may contain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks and uncertainties, including statements related to anticipated revenues, expenses, earnings, operating cash flows, the outlook for JAMDATs markets and the demand for its products. These risks and uncertainties can affect actual results and could cause actual results to differ materially fromthose expressed or implied in any forward-looking statements made by us, or on our behalf. Please refer to JAMDATs reports and filings with the Securities and Exchange Commission for a further discussion of these risks and uncertainties. We also caution you not to place undue reliance on forward-looking statements, which speak only as of the date they are made. We undertake no obligation to update publicly any forward-looking statements to reflect new information, events or circumstances after the date they were made or to reflect the occurrence of unanticipated events.

March, 2005

2

Overview

Leading global publisher of wireless games

Industry leading revenue AND earnings growth

Unparalleled industry domain expertise

Global distribution on over 90 carriers in 40 countries

Over 200 employees with offices in Los Angeles, Montreal, London, Tokyo and Hyderabad

3

Rapidly Growing US Market

$144$345

$590

$900

$1,210

$1,476

2003 2004 2005 2006 2007 2008

Source: IDC, U.S. Wireless Gaming 2004-2008 Forecast and Analysis: GamingTogether, Dec. 2004

JAMDAT

178%

US Wireless Gaming Market (59% CAGR)($ in Millions)

US Marke

t

140%

4

$1.99 - Subscription$5.99 - Unlimited

Info

Whats newGet GamesGet TonesGet GoingGet PixGet FunGet Messaging

Get Fun & Games

Purchasing Games

JAMDAT Golf 2005

5

Carriers Bill on Our Behalf

6

107193

290

413

547

671

2003 2004 2005 2006 2007 2008

Worldwide BREW & Java Handset Sales

(in Millions)

Next Generation Handset Sales

Source: Arc Group, Mobile Entertainment Applications & Markets, Worldwide Market Analysis & Strategic Outlook, 2003-2008, Sept. 2003

44% CAG

R

7

Driving Global Transition

BREW & Java

BREW & Java

Mobile Subscriber Source: IDC, Worldwide Mobile Phone 2004-2008 Forecast and Analyst, April 2004 Estimated Penetration of BREW & Java Handsets based on 2.5 year replacement cycle

Estimated Penetration of Next Generation Handsets

2003 20081.3B Wireless Subs 2.0B Wireless Subs

12% 70%

8

Our Publishing Strategy

Distribution

Branding

Execution

Innovation & Quality

9

Innovation Throughout Platform Evolution

WAP6K Pixel

2001 2002 2003 2004 2005

Handset Capability

BREW / J2ME

16.4K Pixel

Networked Games

19.2K Pixel

ARM9 /Smartphone

38.7K Pixel

3D1.3 MP Video

10

Over 100 World Class Properties

Original Sports Licensed

11

Long Term Control of Key IP

*Worldwide Scrabble rights controlled through 2007

2001 - 2008

2002 - 2008

2002 - 2008

6 yr. Relationship

7 yr. Relationship

6 yr. Relationship

12

5 years spent building carrier relationships

40 Countries90+ Carriers

900+ Million Subscribers

Americas Asia Pacific

Europe

Global Carrier Distribution Channel

http://www.maxis.net.my/index.phphttp://www.starhub.com/http://www.cht.com.tw/CHTFinalE/Web/index.phphttp://www.sfr.com/http://www.kddi.com/english/index.html

13

Distribution Complexity

Low

Medium

High

33 Handsets on Verizon

http://www.verizonwireless.com/b2c/store/controller?item=phoneFirst&action=viewPhoneDetail&selectedPhoneId=1586

14

Asia Pacific

Repeat Process for Each Carrier

Americas Europe

Over 400 Handsets Worldwide

http://www.wwireless.com/http://images.google.com/imgres?imgurl=http://www.skytec-ag.de/imperia/md/images/references/customers/Logo_T_mobile.gif&imgrefurl=http://www.skytec-ag.de/de/references/customers/index.shtml&h=50&w=100&sz=2&tbnid=x-6RSz9307EJ:&tbnh=38&tbnw=76&start=122&prev=/images%3Fq%3Dt-mobile%2Blogo%26start%3D120%26hl%3Den%26lr%3D%26ie%3DUTF-8%26sa%3DNhttp://www.sfr.com/http://images.google.com/imgres?imgurl=http://www.skytec-ag.de/imperia/md/images/references/customers/Logo_T_mobile.gif&imgrefurl=http://www.skytec-ag.de/de/references/customers/index.shtml&h=50&w=100&sz=2&tbnid=x-6RSz9307EJ:&tbnh=38&tbnw=76&start=122&prev=/images%3Fq%3Dt-mobile%2Blogo%26start%3D120%26hl%3Den%26lr%3D%26ie%3DUTF-8%26sa%3DNhttp://www.vodafone.co.uk/http://www.swisscom.com/GHQ/?lang=enhttp://www.mobilkomaustria.com/CDA/frameset/start_frame/0,3149,888-888-html-de,00.htmlhttp://www.starhub.com/http://www.kddi.com/english/index.htmlhttp://www.cht.com.tw/CHTFinalE/Web/index.phphttp://www.attwireless.com/

15

Expanding our Customer Reach

Direct to Consumer

Handset OEM Retail

Carriers

3%

Wireless Revenue Channels FY 2004

97% < 0.5%

http://images.google.com/imgres?imgurl=http://www.retinal.nu/verizon/images/getitnowgames.gif&imgrefurl=http://www.retinal.nu/verizon/&h=56&w=110&sz=1&tbnid=ZkeNYU0ZehgJ:&tbnh=40&tbnw=78&start=22&prev=/images%3Fq%3Dget%2Bit%2Bnow%2Bverizon%26start%3D20%26hl%3Den%26lr%3D%26sa%3DNhttp://www.circuitcity.com/sony.htmlhttp://www.ebgames.com/

16

Radio ShackRadio Shack

Radio Shack JAMDAT is Radio Shacks master merchandiser for

wireless content through the JAMDAT Games To Go!smretail distribution system

Why? Radio Shack is the #1 Retailer of wireless

phones in the US - over 7,000 stores

Radio Shack wants to sell wireless accessories and content

JAMDAT wants to reach consumers at the point of handset purchase

17

Financial Highlights

Committed to Profitable GrowthProfitable in each quarter of 2004$5.1M Adjusted net income on $36.6M of revenue (14% margin)$6.6M EBITDA (18% margin)

Strong Balance Sheet$75M of Cash and Receivables at 12/31/2004 $3.62 per share (20.7M @ 12/31/2004)

Pure play wireless gaming growth story

18

$1.8 $2.3$4.1

$5.2$7.0

$8.4$9.5

$11.6

$14.1

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1E

Consistent Sequential Revenue Growth($ in millions)

Pure Play Growth Story

22%

13%

20%

22%

2003 2004 2005

19

$1.6

$6.9

$13.5 $14.5

$36.6

$25.3

FY 2002 FY 2003 FY 2004

Revenue Operating Expenses(1) Excludes non-cash stock compensation expense

(1)

Increasing Revenues Faster than Expenses

Revenues up 2,188% - Expenses up 267%($ in Millions)

20

Revenue Diversification

14%

13%38%

17%3%

15%

$36.6 Million

Increasing revenues, up 171% , AND reducing Channel and Product concentration

Verizon

IntlOther US

PC/PDA

Sprint

Cingular

FY 2004

Bowling Franchise

21%

100+ Products

Channel Products

21

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

2003 2004

Amortizationof Intangibles

Hosting &Other

LicenseAmortization

Royalties

Gross Margin

Cost of Revenues

85% 81% Gross Margin

22

Quarterly Fluctuations

% of Revenue

R&D, 35%

G&A, 19%S&M, 16%

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4

20042003

What happened in 2004 Increased workforce from

100 to over 200

Became a Public Company

Expanded into Japan and India

Continued to invest heavily in product development (all expensed) .

23

Product Revenue by Year

FY 2002 FY 2003 FY 2004$0.0

$10.0

$20.0

$30.0

$40.0

2002 2003 2004

Year Product Launched

($ in Millions)

55%

12%

33%

Long product shelf-life

Catalog generated 85% of 2003 revenues and 88% of 2004 revenues

High R&D investment over the past 4 years creates strong revenue momentum 85%

88%

24

$11.6$14.1

Q4 '04 Q1 '05E

$0.06

$0.12

Q4 '04 Q1 '05E

Revenue Growth & Profitability

(1) Excludes Non-cash Stock Compensation and Amortization of Other IntangiblesAll 2005 numbers based on midpoint of guided range

Revenue($ in Millions)

(1)

$36.6

$61.0

FY 2004 FY 2005E

Adjusted EPS

$0.24

$0.53

FY 2004 FY 2005E

Year

Qtr22%

67%

100%

121%

25

Lock-up Shareholders

Apax Partners 3.7M

JAMDAT Employees 3.0M

Benchmark Capital 2.5M

Qualcomm 2.3M

Sprint 0.7M

Intel 0.6M

Sun 0.2M

http://www.benchmark.com/index.htmlhttp://www.jamdat.com/JamdatWeb/Catalog/US/en/game/mobile/Welcome;jsessionid=KALDHGCLMCEI

26

Research Coverage

Current CoverageLehman Brothers Jeff Kvaal / Tim Luke Overweight - $25.00

Wireless Equipment

ThinkEquity Mark Argento Buy - $25.00New Media

Kaufman Brothers Mark May Buy - $24.00 Internet & Digital Media

UBS Michael Wallace Neutral - $23.00 Consumer Electronics

Merriman Curhan Kevin Dede Buy - mid-$20sWireless Technology

Safe Harbor StatementOverviewRapidly Growing US MarketCarriers Bill on Our BehalfNext Generation Handset SalesDriving Global TransitionOur Publishing StrategyOver 100 World Class PropertiesLong Term Control of Key IPDistribution ComplexityRepeat Process for Each CarrierExpanding our Customer ReachRadio ShackFinancial HighlightsPure Play Growth StoryIncreasing Revenues Faster than ExpensesRevenue DiversificationGross MarginQuarterly Fluctuations Product Revenue by YearRevenue Growth & ProfitabilityResearch Coverage