Explicit vs Implicit Gamification: How to Define Gamified Design
Back in 2011 (Wow, has it really been that long?), Gamification pundits Gabriel Zichermann and Sebastian Deterding had a large debate on various gamification concepts.
One of Deterding’s critiques was that, contrary to what Zichermann wrote in his book Gamification by Design, Serious Games and Advergames should not be considered as Gamification.