Exploring the Action Adventure game Cantrip created in part by the author several narrative/interactive theories are explained and the subject of narrative coherence is developed as a theory. This theory is then applied to a test using the Emotiv Epoc EEG reader in order to further understand reactions to nondiegetic narration and the relations of interactive affordance and narrative intelligibility within the game.
The test had several limitations and the results are inconclusive. The findings otherwise indicate that the possibility for biometric observation of a player using EEG wave reading is a viable source of biometric data that may be applied to a better understanding of user experience in games.

The narrative coherence of a game is analysed through pivotal narrative events throughout. An assessment is made in regard to the user options.

Suggestions as to what elements can provide a sufficient methodology for evaluating a videogame user experience are put forth. Further testing is deemed necessary before such a methodology can be deemed definitively useful to game developers.