Thanks to HP Wuvcraft, I get to shill am gonna post some impressions for Army of Tentacles: (Not) a Cthulhu Dating Sim.
The story: You play Perry, a female (unless you're a male, in which case almost everyone calls you a female anyway as a running gag) half-Deep One half-human who has to amass an army and invade the world. It actually is not a dating sim, but apparently if you buy the DLC, there's a New Game+ where that option can open up. Again, just going by the achievement list. I'm not overly familiar with the source material of HP Lovecraft beyond existing pop culture references (I know, I know!) but it's pretty straightforward and just lets you enjoy the ride without thinking about it too much.
The dialogue and voices: The dialogue is light-hearted and self-referential, with lots of pop culture references and "le memes," as the kids call them these days (they still do that right?) The voices for the most part are really well done (including a cameo by Chris Avellone!) but it's kinda jarring to have the protagonist be the only unvoiced character. And they could have gone over the subtitles with a fine-toothed spellcheck comb, if you get my drift.
The gameplay: The battles are dialogue-based, it's a sort of rebut-the-argument system, similar to Monkey Island's swordfighting-and-repartee, with a dash of Phoenix Wright and a pinch of Dark Scavenger. It does require outside knowledge - anything from nursery rhymes to Shakespeare to hagiography to American history to classic television to indie gaming. So if you don't know things, have that alt-tab ready. You have exactly two stats: sanity (health points, number of wrong battle-dialogue answers you can give before dying) and intelligence (which gives more dialogue options to recruit party members.) My recommendation is to put everything into intelligence, because the only way to restore sanity is by resting a LOT, so you might as well just let yourself die if you get answers wrong, restore and do it perfectly...yes, you heard me correctly, savescumming is the recommended way to play. I ain't wasting a month of game time just so I can get two extra wrong answers, screw that. Anyway, you also get two weapon and two armor slots. They don't cost money but they have requirements to unlock, and then you just pick them up. If you want to be able to switch, then you have to unequip the one you've got and set your weapon/armor to "none" to be able to pick up the second one.
Overall the gameplay is innovative, and dare I say pretty fun, but they could have been clearer about some aspects of gameplay (like the armor/weapon switching, or greyed-out dialogue choices showing you need more intelligence to actually use that,) and it would have been really cool if the enemies could reply to specific rebuttals instead of just counter with one stock response.
The length: Steam profile time says 3.3 hours to finish the game (I got a bad ending.) It probably will be less for you, because I spent some time doing QA with HP Wuvcraft. So it's quick for what they call an RPG, but about average for a dialogue-based adventure game/visual novel.
The verdict: If you're looking to date Cthulhu, this game isn't for you. If you like your games serious, give this a pass. If you prefer your games meme-free, can't recommend. But if you want a mix of cheap laughs, strategic dialogue choices and fetch quests, then this one could be worth your hard-earned bucks.