There are quite a few playable characters throughout this series. In the hacks that do have other player characters, they are often used in alternating levels (so for one level, you might be playing as Mario but in the next level you'd be playing as Sonic). This is also done for the purpose of storytelling, as you would find out if you gave this series a try.
And looking at those snow level screenshots, they look nice, but the solid blue background beyond the mountains feels empty. It could use something, like stars, clouds, an aurora... even just a gradient would look better.
And looking at those snow level screenshots, they look nice, but the solid blue background beyond the mountains feels empty. It could use something, like stars, clouds, an aurora... even just a gradient would look better.