Well there are a lot actually:
QSP with real images
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RPGM:
Pretty much anything from CombinAtion (careful he has SCAT and Urination stuff sprinkled in)
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A very good game:
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.. it is semi on hold, but creator said he is back an working on it again.
More RPGm:
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Renp'y:
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Others:
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(you make others sluts really, buts till lots of girl on girl stuff)
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(real images / rags)
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(real images / HTML)
Overall lots of the games you can find here:
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most female protagonist games are games where you turn her into a slut quite quickly.
Have fun.