Krzysztof Szafranek is a mobile game developer at Wooga. Some key points about his work: - He has experience developing mobile games at Wooga, Roche, and Nokia from 2001-2012. - At Wooga, one of their games launched in 2013 had over 45 million installs and 3 million daily active users playing 4 billion rounds totaling 0.5 trillion seconds or 14,000 years of gameplay. - Wooga employs strategies like data-driven design, multi-platform support, QA without testers, and continuous integration to develop mobile games at scale.

1. Krzysztof Szafranek
Mobile Game
Development
Wooga
@szafranek

2. Кжыштоф
Шафранек
Roche Nokia Wooga
2001 2005 2009 2012
Web

3. Na&ve development

9. Launched on
22. August 2013

10. Over 45 million
installs

11. 3 million
daily active users

12. 4 billion
rounds played

13. 0.5 trillion
seconds

14. 14k
years

15. Mul>-­‐pla@orm strategy
QA without testers
Data-­‐driven design

16. Mul>-­‐pla@orm

19. http://xkcd.com/1174/

21. 0
50
100
150
200
2012 2013
Indexed Downloads
Android iOS
0
50
100
150
200
2012 2013
Indexed Revenue
Downloads App Revenue
Source: AppAnnie 2013 Retrospective

25. Objective C for Android
Native performance
Open Source

27. UIKit animation performance
Some tweaks required
Cocos Builder

28. 1. Do you need an app
or responsive website?
Mileage may vary...

29. 2. Which platforms do you
need to support?
Mileage may vary...

30. 3. Can you deliver quality
user experience on all
supported platforms?
Mileage may vary...

31. Data-­‐driven

32. HiPPO
Highest Paid Person’s Opinion
Sam Howzit, flickr

33. Analyst for every live game
Business Intelligence team
Open access to data

34. No.
Measure
all the things?

35. Demographics
Retention
Bookings (revenue)
New users

36. Errors
Session length
Engagement
Churn rate
Marketing effectiveness
...

38. GAME
CLIENTS
NGINXNGINXNGINX
LOAD
BALANCER
APACHE
KAFKA
EXASOL
DASHBOARDS
MYSQL
MAIL REPORTS

41. A/B tests

44. You can’t A/B test
your way out of bad design
www.dvdrewinder.com

45. QA without
testers

47. PAIR PROGRAMMING
UNIT TESTS
INTEGRATION TESTS
CONTINUOUS BUILDS
INTERNAL RELEASE
STAGING
LIVE

48. CONTINUOUS BUILDS
INTEGRATION TESTS
UNIT TESTS
Jenkins

49. CONTINUOUS BUILDS
STAGING
INTERNAL RELEASE
LIVE

52. CONTINUOUS BUILDS
STAGING
INTERNAL RELEASE
LIVE
INTEGRATION TESTS
PAIR PROGRAMMING
UNIT TESTS

53. Bugs will happen...

54. Do you really need an app?
Test, but move fast
Measure what’s useful
Thank you!
@szafranek
www.wooga.com