Also I was streaming the games from this jam on stream yesterday leaving reviews and ratings on each one. Apperantly the game was frozen on the stream. I think that might be related to the cursor disapearing.
For the undertale part, the part where I felt the hitbox difference the most were the blue attacks, as to me it'd look like I was outside of the blue attack and yet I'd still be dammaged. If I remember correctly, if the heart were to barely fit in a 16 by 16 box, the hitbox should be about 8 by 8 (I don't exactly know, but playing around with it a few times should allow you to come up with a good size.
Overall I really liked the story and was frustrated that the mechanichs didn't allow me to enjoy the game to the degree that I'd hoped it'd.
If you wanna see the vod of the stream, my twitch is Subhambh.