Game developer Jason Newman who is currently crowdfunding Akurra, mentioned here on GOL recently, has decided they no longer need a stretch-goal for Linux support.
What is Akurra? A retro styled puzzle game, inspired by the likes of Chip's Challenge, Star Tropics, Sokoban, and Zelda. Push blocks into holes and over pits, avoid spikes, explore caves, and ride sea turtles in order to find keys, gems, and stars that unlock new paths and friends to aid you as you explore a collection of islands chock-full of puzzles and secrets.
Originally, Linux and macOS were the first stretch-goal to have a simultaneous release otherwise they would come later however that's not the case now. In a Kickstarter update post, Newman said this:
We decided that we will be able to move forward with Mac and Linux regardless of stretch goals! (All rewards of $10 or more will be able to choose Windows, Mac, or Linux). After the Kickstarter wraps up, I will create Mac and Linux versions of the demo. There will also be Mac and Linux versions of the game for testers during development!
Always great to see such a commitment from a game developer. The good news is that it's now over the initial $12,000 goal so it's got the main funding as they push through special stretch-goals to unlock more platforms and features.