I would like to bring to notice Neftelia, another RPG Maker game with a simpler design than Yume Nikki, that plays relatively similar. People seem to have linked it to Yume Nikki from what little I've gathered. If you are able to find it, it would be utmostly respected if you uploaded it on an English site.
http://www.mediafire.com/downl oad.php?mbm5mtnzmuzThis is an executable version by a guy named Reiveth. Haven't tried it out, but it should work.