What to consider:
Player-character dynamic - how to create urgency and responsibility in the player
Sharp dialogue - fills in the gaps in the story
Setting - interactive space, intuitive environment eliminates need for dialogue
Pacing - timing and release of information is essential to keep players engaged
Steps to writing a narrative:
Outline the story - major events in order
Define the genre - defines the experience
The game world - how much of it is explorable. Decide the lore, culture, language and history
Character/s - protagonist, antagonist, companion etc. Define the characters traits and relationships with other characters. Explain how they will develop throughout the game
Flowchart - or timeline to show where and when each event is happening
Main story - solid foundation, could focus on major cut scenes - non-interactive sequences
Flourish details - side quests that encourage exploration, NPC details and Items
The character...
Sources: https://www.masterclass.com/articles/how-to-write-a-video-game-story#learn-more