You can use this form to upload saved games, screenshots, or tracebacks to me if you need to.
By default, your saved games will be found in:
Linux: ~/.renpy/[game name]
MacOS X: ~/Library/RenPy/[game name]/
Windows XP and 2000: C:\Documents and Settings\(your username)\Application Data\RenPy\[game name]\
Windows Seven and Vista: C:\Users\(your username)\AppData\Roaming\RenPy\[game name]\
Note that AppData or Application Data may be invisible files on your computer; you should set your computer to show hidden files to get into them. (Alternatively, typing %APPDATA% into the address bar of an Explorer window will take you there.)
If you can't find them, search for a directory named science_girls, DateWarp, MagicalDiaryHorseHall, or CuteKnightKingdom. (The Windows version of Cute Knight Kingdom will keep its saved games in other locations; where depends on what version of Windows and what version of Cute Knight Kingdom you have.)