Hi darling. To play TWOB online you can do so here. It has come to my attention that the current online version is not the latest update (Mistress Helen's Dark Flock Ending) but the one before (Submissive Routes Rework), so I've contacted them to let them know and they should update it anytime soon. I will post again here once it has been updated to let you know <3
A second option would be to play the Naughty Kitty Cat Edition (cheat version) which you can find in SubscribeStar or Patreon. Have in mind that with your subscription you will also get NKE version for "Project SX-ULTRA" and the Demo for "SF: Rapture Division", both online and download, as well as walkthroughs, HD galleries & photoshoots, and much more!
Hope this helps! <3