The prizes are definitely still up for grabs. Since nobody has succeedeed at earning one, I might offer a hint: Pay close attention to the tutorial after beating your first stage(of the main 8). Players struggling to beat stages can also ask for walkthroughs.
The game has been downloaded more times than stated; far more offline people have downloaded it as well(not from rpgmaker.net's MediaFire download).
As a platform, I prefer itch.io over rpgmaker.net, because I tried very hard to get a money-prize system approved on rpgmaker.net and they refused to allow it on my main game page(but did allow the actual download). So I've encouraged user engagement with itch instead.