Kad - All Numerical Levels 1-71, All Roman Levels I-XXXI (excluding XVII), All Shape Levels Point-Dodecagon, All End Levels Z1-Z6
Maris - Level X (concept)
Doog - Level XVII
gamemastertips, Kobe Li - Structure of Z6
Kad (photography and editing) - All Levels excluding 6, 7, 8, 12, 18, 27, 29, 30, 44, 51, 52, 57, 62, 64, 66, 67, VI, XXIII, XXX, Point, Triangle, Septagon
@neighours_wifi - Secret Levels
Doog, Scrib, Lacey, SEEPAN, Coconut, Honey, Kat, Jade for sending in pics of their cats - Level XXIII
Notpron (DavidM), The String Harmony (Kobe Li), Ze?t (Karol Liver), Oddpawn (AWP and DonD), EBONY (Aneninen), Not the Future (jermrellum), Cipher (gamemastertips) - All Shape Levels
David Münnich (Notpron) - for starting the browser puzzle genre, inspiring me to start one of my own, and slight inspiration for level ideas
Silver Rain - for starting the Nordinho.net thread, kicking up the traffic for the website, and fixing a game-breaking flaw in the website that revealed pages from the website on Google
Catz, GhostsTheElder (+ others) - for streaming gameplay on Discord and "test-playing" levels, weeding out flaws, and recommending hints
Kobe Li - for fixing the transition to the secret level Alpha
