I was wondering if these cave systems had a simple tie-in with the first pack? If so that would be amazing. I just want the player to be able to walk into the cave.
The grass and water tiles are darker versions of the ones from pack 1. But if you mean you wanna make a seamless transition between entering the cave and leaving without a loading screen, that should be possible with the right script. You could put the top of the cliffside on a layer above the player and have that layer turn transparent once a characters walks through a cave door. It might be easier if you merge the outdoor tiles and cave tiles into one big spritesheet instead of 2 separate ones