A lot like Vampire Survivor, the hook is that it starts pretty simple and it ramps the difficulty every minute that passes but you're constantly able to buy more items with powerful effects. By 15 minutes in it's a starting to be overwhelming and by 30 minutes in you are doing a LOT of clicking and there's countless hordes of enemies but because of the particular combination of items you've picked up, you're still alive and every shot causes a chain reaction of other effects. Or you get a combination of items that doesn't mesh terribly well and something gets a lucky shot in and you're dead at minute 22 with no warning.

Also the items are mysterious and you're always finding totally new ones you've never seen before and their powers are wildly different. The story of the game is more told in the item descriptions you can only read in the loading menu than any other single place. I've played 1000s of hours and still refer to the wiki before trying to tell the "story" of the game.

The intricate level designs, complex item interactions, and the rocking soundtrack are also worth mentioning because they are substantially above average for a game of this type.

Did you get the very first one or the remaster? I would recommend starting with the second part as it is easier to get into

It gets really fun about a half hour in, unfortunately

Big memories of playing it for a few hours and listening to tons of music

I just like listening to the music of the game which is already very relaxing