diff --git a/journal/2021-08-13.md b/journal/2021-08-13.md
index 489a00d..401b0c1 100644
--- a/journal/2021-08-13.md
+++ b/journal/2021-08-13.md
@@ -84,7 +84,7 @@ Those tend to be less crowded. Also, I wanted to try IPFS anyway
 
 ### Codewise
 
-- [ ] Optimise post-process script to remove references to stylesheets when
+- [x] Optimise post-process script to remove references to stylesheets when
   they got inlined.
 - [ ] Strip CSS of comments (but keep license banners).
 - [ ] Assume a browser that understands ES modules and tweak rollup accordingly
diff --git a/journal/2021-08-14.md b/journal/2021-08-14.md
index 1ce5352..938f4d2 100644
--- a/journal/2021-08-14.md
+++ b/journal/2021-08-14.md
@@ -70,8 +70,8 @@ JSDoc annotations and tests).
 ### Codewise
 
 - [ ] See ToDos from [yesterday][yesterday].
-- [ ] Implement more parts of the physics engine.
-- [ ] Consider using Nunjucks for interpolation to simplify post-processing.
+- [x] Implement more parts of the physics engine.
+- [x] Consider using Nunjucks for interpolation to simplify post-processing.
 
 ### Previous in line
 
diff --git a/journal/2021-08-15.md b/journal/2021-08-15.md
index 35e621f..887af97 100644
--- a/journal/2021-08-15.md
+++ b/journal/2021-08-15.md
@@ -36,7 +36,7 @@ up in life support systems as well as transport. It could look a bit like in
 
 ### Codewise
 
-- [ ] See ToDos from [yesterday][yesterday].
+- [x] See ToDos from [yesterday][yesterday].
 - [x] Investigate, why box and boundary don't collide.
 
 ### Previous in line
diff --git a/journal/2021-08-16.md b/journal/2021-08-16.md
index 6f45933..bae3633 100644
--- a/journal/2021-08-16.md
+++ b/journal/2021-08-16.md
@@ -34,16 +34,21 @@ I expect this problem to take considerable amount of my time.
 
 ### Codewise
 
-- [ ] See ToDos from [yesterday][yesterday].
-- [ ] Replace JSDom with an alternative.
+- [x] See ToDos from [yesterday][yesterday].
+- [x] Replace JSDom with an alternative.
 
 ### Previous in line
 
 See journal entry from [yesterday][yesterday].
 
+### Next in line
+
+See journal entry from [tomorrow][tomorrow].
+
 [cramer]: https://github.com/xem/mini2Dphysics/issues/3
 [demo]: https://ryuno-ki.github.io/js13kgames-2021/
 [diff]: https://jaenis.ch/hobbies/coding/repos/ryuno-ki/js13kgames-2021/compare/4f857eeb10b97e5df1383942aa653ef8fe1e417d...f5eca1e2964b0a4625ab2e7acfbd52234ba01814
 [linkedom]: https://github.com/WebReflection/linkedom
 [screenshot]: ./2021-08-16.png
+[tomorrow]: ./2021-08-17.md
 [yesterday]: ./2021-08-15.md
diff --git a/journal/2021-08-17.md b/journal/2021-08-17.md
new file mode 100644
index 0000000..d11a4d9
--- /dev/null
+++ b/journal/2021-08-17.md
@@ -0,0 +1,54 @@
+# 2021-08-17
+
+Do you know those days, when you can barely sleep because your mind bursts
+full of ideas? I had that last night.
+
+So today I set down and got them out of my head for the major part.
+
+## Today's achievement
+
+I was quite busy today.
+
+I started with updating dependencies, added some colour, a favicon, ripped out
+JSDom and instead use sinon now, so I can actual check for a call to stroke
+the hero.
+
+Then I started to add a second range input, so now the hero can move along
+both dimensions! For that, additional boundaries were needed.
+
+I added a way to reload the page to reset the page, but that's a bit flaky on
+Firefox. Also, the game now has a settings and game-over scene.
+
+With all of that, you can play it on my own domain now:
+[Play it online][demo].
+
+[commit diff 41fe3e4b63310b25fb6ca55bd9f13387c66b1650 to 514b19099772a4800be23d3c5db280c5d323bd1b][diff]
+
+![screenshot from 2021-08-17][screenshot]
+
+## Next steps
+
+I need a way to reset to the initial state, so I can properly reset the state.
+Also, now would be an ideal time to start writing my Game Design Document,
+since I have everything in place to develop the game I want to submit.
+
+### Codewise
+
+- [ ] See ToDos from [13th August][start]. (Yes, I solved everything after!)
+- [ ] Figure out how to include icons.
+- [ ] Look into including [ZzFX][zzfx].
+- [ ] Configure [MathJax][mathjax], but without a CDN.
+- [ ] Look into [loading custom JavaScript and CSS in Gitea][css] to render
+  MathML / MathJax / ASCIImath.
+
+### Previous in line
+
+See journal entry from [yesterday][yesterday].
+
+[css]: https://docs.gitea.io/en-us/external-renderers/#customizing-css
+[demo]: https://jaenis.ch/hobbies/coding/demos/js13kgames/2021/
+[diff]: https://jaenis.ch/hobbies/coding/repos/ryuno-ki/js13kgames-2021/compare/41fe3e4b63310b25fb6ca55bd9f13387c66b1650...514b19099772a4800be23d3c5db280c5d323bd1b
+[mathjax]: https://github.com/go-gitea/gitea/issues/3445#issuecomment-439673050
+[screenshot]: ./2021-08-17.png
+[yesterday]: ./2021-08-16.md
+[zzfx]: https://killedbyapixel.github.io/ZzFX/
diff --git a/journal/2021-08-17.png b/journal/2021-08-17.png
new file mode 100644
index 0000000..ae43c4d
Binary files /dev/null and b/journal/2021-08-17.png differ
diff --git a/journal/README.md b/journal/README.md
index 07b3a24..6e79e8e 100644
--- a/journal/README.md
+++ b/journal/README.md
@@ -7,3 +7,6 @@ journal and update it daily as I go along.
 
 - [13th August 2021](./2021-08-13.md)
 - [14th August 2021](./2021-08-14.md)
+- [15th August 2021](./2021-08-15.md)
+- [16th August 2021](./2021-08-16.md)
+- [17th August 2021](./2021-08-17.md)