Today, September 14, 2017 - one week before Mondrian - Abstraction in Beauty's second anniversary, Mondrian Maker has been directly integrated into Plastic Reality. This means a whole bunch of things:

1. You can now test your levels as you build them. Hit the Play button (looks like a controller) to Save & Play your level.
2. There is now a custom Saving/Loading interface, instead of Mondrian Maker being reliant on the Windows file browser. This means Mondrian is another step closer to cross-platform compatibility.
3. A new "Testing" mode has been integrated, which bounces you right back to Mondrian Maker after playing your level. At some point it will be possible to seed your level with specific powerups, wall shapes, wall rotations, color palettes, backgrounds, and everything else that is normally randomized inside a Mondrian level, but for now, Testing Mode plays levels in a vanilla state, with no powerups, because of the following:
4. Difficulty Stars! Now when you beat your level at a given difficulty, its frame of the Difficulty button will get a star. This system is going to be important in Sharing your levels on the web, as you will not be able to until you've beaten your level on all four difficulties. These stars are NOT saved externally, so when you're ready to share, you'll have to play your level 4 times and then upload. A pain, to be sure, but a good check to prove you're serious about your level. This check will not be necessary for sharing levels via email.

One more quick note, there are now interactive instructions in the top right Yellow box, instead of just a list of tips. These instructions go in-depth on individual topics of how to use Mondrian Maker and will be updated as more features get added.