This game is better than Sonny 2 in a few things like the AUTOSAVE FEATURE but Sonny 2 is better than this game in more things. If you want to know what are those things just go to it :P
It is a very good game, and we need also Great Dungeon in the Sky 2 that has aplayer pack too.
But there are two suggestions that may be useful.
1:It is hard to find what characters are missing so you have to zoom in :)
2:The dungeons have a very limited number so you need to make more dungeons
 "IntoSpace!"){kind=icon}
 "Shoot Pixels"){kind=icon}
 "Flaming Zombooka 2"){kind=icon}
 "Sonny"){kind=icon}
 "Liquid Measure 2"){kind=icon}
 "Epic Coaster"){kind=icon}
 "Great Dungeon in the Sky"){kind=icon}
 "Civiballs"){kind=icon}
 "Snail Bob"){kind=icon}
 "Crush The Castle 2"){kind=icon}
 "Doodle Devil"){kind=icon}
 "Civiballs 2"){kind=icon}
 "Amorphous+"){kind=icon}
 "Cover Orange 2"){kind=icon}
 "Robot Wants Ice Cream"){kind=icon}
 "Sieger"){kind=icon}
 "ShellCore Command: Skirmish"){kind=icon}
 "The Majesty of Colors"){kind=icon}