Some video game makers have sold the movie rights for popular games.
Conclusion
Selling movie rights is rarely good business for video game makers.
Evidence
StarQuanta sold the rights to Nostroma, the film flopped, and subsequent Nostroma game sequels (despite being better than the original) sold poorly.
Evaluate
The conclusion is a general claim about all (or most) video game makers selling movie rights. The evidence is one company's experience with one game. A single case can't establish what's "rarely good" across the industry. The argument leaps from one example to a broad rule.
Goal
Find an answer that names the move from a single case to a general conclusion — i.e., the small-sample/anecdote-to-rule flaw.