You would think that "tooltips appearing over defined area on mouseover" would be an easy and common thing you could do, but you would be wrong.
Right now I just have some buttons in a place less obvious than I'd like. I really want to encourage people to click on your sites! If your site is A) about a TTRPG campaign, B) resources for TTRPGs, C) has RPG/writing resources and/or D) a personal site with a section for character/RPG stuff, I want to list you and write a bit about your site.
Interactive! Pan around! Hover your mouse over things! Wow! My friend spent two days writing bespoke JS for this!