Stories are the oldest medium to entertain and transfer information. Naturally, storytelling is also a fundamental aspect of digital games. In other words, narratives are the basis or framework of games. This thesis examines and tests two approaches in linear narrative design: the Minimal Linear Approach and the Enriched Linear Approach with the learning goal of fundamentals of cyber-security. The same story is examined with two different narrative designs by how they impact the immersion aspect of the pilot game. Although the two prototypes' main stories are identical, the enriched linear approach with more gaming elements and content is more immersive according to the collected and analyzed data. / <p>There are other digital material (eg film images or audio files) or models/artifacts that belongs to the thesis and need to be archived.</p>