A. F. Aparicio, F. L. Vela, J. L. Sánchez, and J. L. Montes, Analysis and application of gamification, Proceedings of the 13th International Conference on Interacci??n Persona-Ordenador, INTERACCION '12, pp.1-17, 2012.
DOI : 10.1145/2379636.2379653

J. Bargas-avila, O. Brenzikofer, S. Roth, A. Tuch, S. Orsini et al., Simple but Crucial User Interfaces in the World Wide Web: Introducing 20 Guidelines for Usable Web Form Design, User Interfaces, 2010.
DOI : 10.5772/9500

P. Becker, Formulare als ???Flie??band??? der Verwaltung? Zur Rationalisierung und Standardisierung von Kommunikationsbeziehungen, Eine intelligente Maschine? Handlungsorientierungen moderner Verwaltung Jh.). Nomos, 2009.
DOI : 10.5771/9783845219622-291

J. Brooke, SUS-a quick and dirty usability scale. Usability evaluation in industry 189, p.194, 1996.

B. Buxton, Sketching user experiences: getting the design right and the right design, 2007.

J. Cechanowicz, C. Gutwin, B. Brownell, and L. Goodfellow, Effects of gamification on participation and data quality in a real-world market research domain, Proceedings of the First International Conference on Gameful Design, Research, and Applications, Gamification '13, pp.66-73, 2013.
DOI : 10.1145/2583008.2583016

S. Deterding, D. Dixon, R. Khaled, and L. Nacke, From game design elements to gamefulness, Proceedings of the 15th International Academic MindTrek Conference on Envisioning Future Media Environments, MindTrek '11, pp.9-15, 2011.
DOI : 10.1145/2181037.2181040

S. Dolnicar, B. Grün, and V. Yanamandram, Dynamic, Interactive Survey Questions Can Increase Survey Data Quality, Journal of Travel & Tourism Marketing, vol.52, issue.7, pp.690-699, 2013.
DOI : 10.1016/S0160-7383(96)00055-2

URL : http://www.tandfonline.com/doi/pdf/10.1080/10548408.2013.827546?needAccess=true

T. Downes-le-guin, R. Baker, J. Mechling, and E. Ruyle, Myths and realities of respondent engagement in online surveys, International Journal of Market Research, vol.54, issue.5, pp.1-21, 2012.
DOI : 10.2501/IJMR-54-5-613-633

F. Eisermann, Zu den Anfängen des gedruckten Formulars (Gastbeitrag) In: Formulare. Von der Wiege bis zu Bahre...: Formulare im Corporate Design, 2007.

J. Hamari, J. Koivisto, and H. Sarsa, Does Gamification Work? -- A Literature Review of Empirical Studies on Gamification, 2014 47th Hawaii International Conference on System Sciences, 2014.
DOI : 10.1109/HICSS.2014.377

J. Harms, Research Goals for Evolving the ???Form??? User Interface Metaphor towards More Interactivity, Human Factors in Computing and Informatics, pp.819-822, 2013.
DOI : 10.1007/978-3-642-39062-3_60

J. Harms, C. Wimmer, K. Kappel, and T. Grechenig, Gamification of online surveys, Proceedings of the 8th Nordic Conference on Human-Computer Interaction Fun, Fast, Foundational, NordiCHI '14, pp.565-568, 2014.
DOI : 10.1145/1378704.1378719

URL : https://hal.archives-ouvertes.fr/hal-01599660

S. H. Hsu, J. W. Chang, and C. C. Lee, Designing Attractive Gamification Features for Collaborative Storytelling Websites, Cyberpsychology, Behavior, and Social Networking, vol.16, issue.6, pp.428-435, 2013.
DOI : 10.1089/cyber.2012.0492

URL : https://ir.nctu.edu.tw:443/bitstream/11536/22038/1/000320164300005.pdf

R. Hunicke, M. Leblanc, and R. Zubek, MDA: A formal approach to game design and game research, Proceedings of the AAAI-04 Workshop on Challenges in Game AI, pp.1-5, 2004.

C. Jarrett and G. Gaffney, Forms that work: designing web forms for usability, 2008.

O. Kaminska, A. L. Mccutcheon, and J. Billiet, Satisficing Among Reluctant Respondents in a Cross-National Context, Public Opinion Quarterly, vol.74, issue.5, pp.956-984, 2010.
DOI : 10.1093/poq/nfq062

H. Korhonen, M. Montola, and J. Arrasvuori, Understanding playful user experience through digital games, International Conference on Designing Pleasurable Products and Interfaces, pp.274-285, 2009.

C. Lewis, N. Wardrip-fruin, and J. Whitehead, Motivational game design patterns of 'ville games, Proceedings of the International Conference on the Foundations of Digital Games, FDG '12, 2012.
DOI : 10.1145/2282338.2282373

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.409.3380

A. Mavletova, Web Surveys Among Children and Adolescents, Social Science Computer Review, vol.15, issue.2, 2014.
DOI : 10.1086/268099

D. J. Mayhew, The Usability engineering lifecycle: A practitioner's handbook for user interface design, 1999.

J. Nielsen, Usability engineering, 1993.

J. Puleston, Online research?game on!: A look at how gaming techniques can transform your online research, Shifting the Boundaries of Research. Proceedings of the 6th ASC (Association for Survey Computing) International Conference, pp.20-50, 2011.

B. Reeves and J. L. Read, Total Engagement: Using Games and Virtual Worlds to Change the Way People Work and Businesses Compete, Harvard Business Review Press, 2009.

P. Sweetser and P. Wyeth, GameFlow, Computers in Entertainment, vol.3, issue.3, pp.3-3, 2005.
DOI : 10.1145/1077246.1077253

K. Werbach and D. Hunter, For the Win: How Game Thinking Can Revolutionize Your Business, 2012.

B. Wlaschits, Gamifizierung von elektronischen Umfrageformularen: Design und Experten-Evaluierung . Master's thesis, supervised by, 2014.

L. Wroblewski, Web Form Design. Filling the Blanks, Louis Rosenfeld, 2008.