Star Archer's tidy triangles would not exist without help. Many thanks to all.
Game Inventor and Software Development
Eddie Caplan
Emotional & Math Support
Barbara Hays
Tech Help
None of this would be possible without the Unity development platform. Hooray for all of their dedicated effort and support.
Math:
Math for exploding celebrations: Find point on a circle closest to a given point
Math for cascade celebration: Bouncing ball algorithm
Colors:
Coolers.co: Terrific resource for finding and creating color palettes
RapidTables.com: My go-to source for color technical information
Alan Zucconi: The incredibly challenging task of sorting colours
W3 Schools... of course: Crayola Colors
Jenny's Crayon Collection: Even MORE information about crayon colors.
David Nichols: Coloring for Colorblindness - Wong Colorblind-friendly palette
Paul Tol: Colour schemes and templates.
Color-name.com: Everything I need for finding color names
Bang Wong: Even more information about colorblindness... and color names!
Unity:
Sayori Iida: Clear, Clever, Fun explanation of Unity's Live Links & Hover. Special shout-out to the many engineers at Mozilla and Google who implemented auto-translation in Firefox!
VR with Andrew: Excellent presentation and simple solution for auto-updating version in Unity
Bunny83: Thank you, thank you, for the beginners help I needed.
Alexander Zotov: Consistently among the best Unity videos.
Code Monkey: Solving problems Unity's splash screens #1: Scene Manager in Unity (Unity Tutorial). Code Monkey is always excellent.
Jimmy Vegas: Solving problems Unity's splash screens #2: Mini Unity Tutorial - How To Use Scene Manager - Beginners Tutorial
Unity UI Extensions and Simon Darkside: Various UI elements, especially the Slider I used for setting the number of pieces in a game.
Hotpot: Must-have utility for Icon resizing & generation. The icons you see for tidy triangles on your phone look great because of Hotpot!
Images
Kirill Kazachek: icon: Tick icons created by Kirill Kazachek - Flaticon
Gregor Cresnar: icon: Close icons created by Gregor Cresnar - Flaticon
Karen Arnold: background image: fiery orange red sky
Charles Rondeau: background image: dark blue & black textured
Bob Richards: background image: colorful abstract sunset/sunrise
Backgrounds And Borders: background image: pink watercolor background
Wahooj1: background image: taupe with little pictures
Texture Pics: background image: light blue
Jean-Pierre Pellissier: background image: blue/green blend cool texture
FWStudio: background image: brown wooden parquet flooring
NIKON D700: background image: wood - brass-brown-copper abstract antique
Sebastian Emir Llapur Gandulfo (silapur): mouse cursors: Cosmos Cursor
Miscellaneous
Jon L: Sending email: They saved me after lots of confusion. Thank you Jon!
Kryptos and Shanlu: Sending email: Tackling weird problems sending Email on iOS and Android
W3 Schools: Sending email: W3 schools the rescue, as always. This time for URL Encoding!
GUIDGenerator.com: Must-have utility for internal GUID generation