This is a more complicated addition. I am adding 5 Genesis games made by Z-Team: Barbarian, Beach Volley, IK+ Deluxe, Ivanhoe, and Return to Genesis. These games are, to my understanding, ground-up remakes of classic Atari and Amiga games. Z-Team has made the roms for these games available for free on their website says their game roms are available on its website though there are no working download links, however they also offer their Patreon supporters CIB copies of a game after about a year of support ($120 in contributions).
http://www.z-team.fr/remake-megadrive-games/
I have opinions on the quality of their releases and their responsiveness to supporters given that I was one of their Patreon supporters for about a year, but my Almanac and Horizon threads are meant to be objective resources for the community, and whether a game is worth playing or not can be hashed out on another thread (and I'll happily offer my opinions there). Unless there are meaningful concerns surrounding the legitimacy or ownership of a homebrew, such as the important discussion we had in March regarding Black Box Challenge, I try to limit my updates to statements of what I'm adding and whether there is anything worth mentioning about how a game fits within my classifications.