First and foremost, I really love the art style you are going with. Dark pairing with fishing, reminds me of Dredge a lot, and I am a sucker for this.
It's a bit sad that there is not much the player can do to influence the outcome of the roulette, and it feels too luck-based. But hey at least the magnet exists, and I am very pleased that it exists. With all that said, though, this is quite a nice idea for a game, and I think with more time this can evolve into a much greater game. Keep up the good work!