Not to advertise out game, but that's what we did. Upgrades payed for in fish :)
Actually this is the first game I played from the submissions as it so close to our entry from the screenshot alone. And I also realy like this one.
That's what I did as well, I looked for similar games to see what others did differently. just played your game, its very enjoyable, has a bit of soothing music as well.
