clears throat
since i wrote a proper review for this game when i added it to my collections, im just gonna copy-paste it here w/a few tweaks to add more of my thoughts for anyone still playing the game and/or wanting to play it.
Only Sans and Gaster routes at the current moment - I have only played Gaster's route.
I HIGHLY recommend using the walkthrough AND saving as often as possible, as one little mistake CAN and WILL mess up your ENTIRE run.
Past this point is a BIG ASS SPOILER WARNING. Continue at your own risk unless you have no intention of playing Gaster's route, or playing the game, or just want someone's honest opinion BEFORE you play, then continue on. :)
First off, with both Sans' and Gaster's romance routes, if you pick the correct options, you have an ESTABLISHED RELATIONSHIP with them, which I find extremely adorable! Friends to lovers isn't my usual trope, but when mixed in with high stakes and a horror theming, well, what is there not to love?
(Also your sister being your's and your love interest's biggest shipper is so funny it makes me cackle lolll)
The character customization, as usual, is extremely diverse, which I love. The only thing you can't choose is your soul trait, as it is extremely vital to the story despite the fact you only learn of it ~halfway through the game. If you're reading everything (and depending on how fast you read) it should take ~20 minutes to learn of your soul trait: Kindness. The whole end-game of the story revolves around you being so kind you give up everything you have just to save everyone; friends (Undyne and Toriel), your family (your sister), those who worked at the lab (Bratty, Catty, Papyrus, Alphys, etc), your love interest (Sans or Gaster (and then eventually Papyrus too)), heck, you even try to save the Entity keeping the curse ALIVE. If that doesn't speak volumes about how kind you/MC is/are? Then I don't know what will tbh.
The interactions you end up having with Gaster too really delve deep into the fact that the two of you aren't just 'buds because he's your sister's boss', he ACTUALLY cares about you and has shown this care to you multiple times, which I find really charming. ;)
But yeah, I say if you have about ~an hour or two of your day and don't know how to spend it, this IF along with others made by Darkpetal16 is a good way to spend it. You will not regret it, no joke, no lie, no tomfoolery.