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Become a sponsor to Purple Kingdom Games

Purple Kingdom Games are a small band of hobbyists who are building free tools and software for gamers and game developers alike! We take on anything we’re excited about and have so far released an InputMapper for Unity, and an entirely new 2D game engine for Scala called Indigo. We’re also working on a Gloomhaven tool for people playing remotely during the coronavirus lockdown and beyond.


Indigo is our landmark functional game engine for programmers. Build and test your code with all of the checks and safety that functional programming in Scala provides. Indigo compiles to JavaScript, so you can ship your games to any platform!

The engine has been designed specifically with programmers in mind. It focuses on developer productivity and ease of testing.

Unity Input Mapper

The Unity Input Mapper was designed to allow programmers to load and save input mappings at runtime, while at the same time providing a familiar interface for those that already use Unity's inbuilt mappings.

7 sponsors are funding PurpleKingdomGames’s work.


Meet the team

Featured work

  1. PurpleKingdomGames/indigo

    An FP game engine for Scala.

    Scala 374
  2. PurpleKingdomGames/tyrian

    Elm-inspired Scala UI library.

    Scala 105
  3. PurpleKingdomGames/virtual-gloomhaven-board

    Interactive game board for Gloomhaven

    Elm 14

Select a tier

$1 a month


Earn yourself a nice logo for your Github profile, a warm fuzzy feeling inside, and our eternal gratitude! ❤️

$5 a month


Earn yourself a nice logo for your Github page, get an even fuzzier feeling inside! Gain our eternal gratitude and give yourself a high five!

$25 a month


All of the above, plus you'll get priority support from us if you run into an issue! Simply mention you're sponsoring us at this tier and we'll raise your issue as a matter of priority 🥉

$100 a month


All of the above, plus you'll get your name added to the README of Indigo! 🥈

$1,000 a month


All of the above, plus we'll include your name and avatar or company logo on our website, and in the Indigo README file with a link to your site! 🥇