The rest of this post is about the first demo. I'm going to update it, in the meanwhile you can check the news in the latest posts.
First of all I apologize for my poor English.
This is my first hack, the actual plot is very simple, but I accept any constructive criticism and suggestions.
You can download it here
The title screen shows the first version of the first level.
This is the Toad's house, which takes the place of the house of Yoshi's house. It contains a mushroom, which can be taken at any time.
The last part of the first level.
The first world.
The second level. The blue coin takes the place of the Yoshi coin.
The third level, shroom-themed.
The fourth level, that houses tens of Piranha Plants.
This place of the first level of the second world isn't passable with small Mario, so I put a power-up that is only accessible with him. If Mario has the cape, he shouldn't fall immediately after destroying the turn block...
The Blue Palace, a puzzle level. No, there isn't any switch, but a rich treasure is waiting for you in the last chamber...
This is Pixeland, a 8-bit level. The position of some blocks recalls the first two levels of Super Mario Bros., but the rest of the level is original. It's very easy to complete.
The external of the second castle. The cape feather is easier to obtain than it seems.
The internal of the second castle. Pay attention to the fireballs!
The new version of the second world. There are no symbols, because to make the screenshots I created a version with the levels automatically cleared.
The Squished Goomba is fixed!
The bridge of turn blocks now is easier to pass.
All the credits are included in the readme. Have fun!
I made an userbar for those who want to support this hack: