Each episode thus far has a couple of hours play. (depending on how many saves you make to follow alternate decision paths). Thus far we have a hand-job, some groping and kissing, masturbation, nudity, exhibitionism and cuddling. It's a slow burn, but most of the action has been with his sisters thus far. They're all feeling the attraction, but they still have to push through a few barriers that seem to be crumbling. The superpower stuff is integrated into the plot. Basically the people with super-powers are kept on a tight leash by a paramilitary force. The three siblings are registered power users but the MC seems to be developing an additional power, and for the moment is keeping it quiet because he might be in jeopardy if the wrong people find out. There's also a family mystery involved that goes back to a civil war against the superpowered.
The developer is charging $3.50 per episode, A preview version that contained the first half of Episode one and ended with a link to the pay site was the original upload as well as the complete episode 2. Subsequently the full Episode One was added. The negative paywall comments date from when only the preview version was posted.