This is a mod of Super Mario Odyssey which replaces Mario with Luigi. Atlas rigged the unused Luigi over Mario (which is actually the model which is used for Luigi in balloon world), and then I imported them and created the needed files. Atlas also created the logo. There are also some texture hacks, which are made to make the game more Luigi-based (green instead of red). They are shown in Atlas's video which you can find below.
Super Luigi Odyssey is a WIP (work-in-progress) mod by us. It's not finished, and this is still a beta. There are still some problems to fix, and stuff to add. We will make more videos about this once we make more progress.
Check out Atlas's video for gameplay of Luigi in Cap Kingdom to Cascade Kingdom: http://www.youtube.com/watch?v=pCV7Oy5qsFo
Thanks to Zach for recording the video: https://www.youtube.com/channel/UCEHgMSOsYjZm2WXX7_tUMdg
Atlas's channel: https://www.youtube.com/channel/UCIlXyyd9NdDKKHhcr7ZWRGQ