Minor Spoiler:
@abhimonk @Ghost_wave
I played the game twice and winning or losing the minigames doesn't change the outcome.
Spoiler:
Based on the truck driver's conversation the MC might have some underlying medical condition besides being drunk and hung over (maybe it's the reason he got drunk in the first place). There doesn't seem to be a connection between the minigames and the story to me, or if there is then it's a very loose one.. At least the fishing club actually exists in the story. I also noticed death was mentioned as a theme and the game's description calls it a "ghost story", but I'm not sure where they fit in. As for the title of the game, the fish are probably clairvoyant.