mmm, yah the big areas are beacuse in the game that im making you cant see that areas... and.. 150? it is very weird because i use a pallete of colours and dont use any filter or brush... Can be the transparents? i will try to upload it with white background
There's some things about this that I really like, but also some things I think could be improved. There's several places with a lot of good small details and it looks like a lot of work went into them, but there's also a lot of large areas that don't look like nearly as much work was spent on them. I think that tends to happen when making very large pixel art like this.
I like the large, futuristic city and what looks like a small town in a forest to the left of it and slightly below it. There's a lot of areas where the pixels have too sharp of a contrast like the black with light grey lines in the lower right. In the main city the black outlines are very harsh.
There seems to be a technical issue with the colors here. You listed this as having 25 colors, but it actually has 150. A large number of those are partially transparent (which aren't allowed here) but there's also a lot of very dark, nearly black, colors that are too dark to really see the difference between them.
too much scratchy oekaki work to let this into the gallery, pixel art submitted to the site should be more controlled, not just drawing with pixels. it looks like a good start but will take a lot of refinement.