Date/Warp is a visual novel from Hanako Games, paced out with puzzles. I liked a lot of things about it, but had some issues with the structure; essentially, my discussion is about how to handle situations where you want the player to replay and try most of the alternate versions of a multiple-ending game, where that will mean that late replayings will be mostly the same experience over again. Date/Warp enforces this more than many other games (though in a way I gather is not unusual for visual novels) by having the best ending be completely locked and inaccessible until you have played through almost every possible variation.
It’s a problem that has some bearing on multiple-path IF. I know, for instance, that there are people who did play Alabaster this way and found it exasperating to do so — see TempestDash’s review here — even though the intention was to steer players aggressively towards interesting endings and point out which mysteries were missed, rather than to encourage complete exploration of content. So, though I’m critical of Date/Warp as an experience in that regard, I think it raises some useful questions.
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Emily Short's Interactive Storytelling 