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@@ -0,0 +1,9 @@
+{
+  "title": "Fluid dynamics",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/fluid_dynamics.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/132-fluid-simulation/showcase/contribution4.png b/content/videos/challenges/132-fluid-simulation/showcase/contribution4.png
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diff --git a/content/videos/challenges/184-elastic-collisions/showcase/contribution1.json b/content/videos/challenges/184-elastic-collisions/showcase/contribution1.json
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+{
+  "title": "Brownian motion",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/brownian_motion.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/184-elastic-collisions/showcase/contribution1.png b/content/videos/challenges/184-elastic-collisions/showcase/contribution1.png
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+++ b/content/videos/challenges/184-elastic-collisions/showcase/contribution2.json
@@ -0,0 +1,9 @@
+{
+  "title": "Basic Collision",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/collision.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/184-elastic-collisions/showcase/contribution2.png b/content/videos/challenges/184-elastic-collisions/showcase/contribution2.png
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diff --git a/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution5.json b/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution5.json
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+++ b/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution5.json
@@ -0,0 +1,9 @@
+{
+  "title": "Multiple gravitational attractors",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/multiple_gravitational_attractors.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution5.png b/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution5.png
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diff --git a/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution6.json b/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution6.json
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--- /dev/null
+++ b/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution6.json
@@ -0,0 +1,9 @@
+{
+  "title": "Mutual gravitational attraction with impulse",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/mutual_gravitational_attraction.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution6.png b/content/videos/challenges/56-attraction-and-repulsion-forces/showcase/contribution6.png
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diff --git a/content/videos/challenges/67-pong/showcase/contribution2.json b/content/videos/challenges/67-pong/showcase/contribution2.json
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--- /dev/null
+++ b/content/videos/challenges/67-pong/showcase/contribution2.json
@@ -0,0 +1,9 @@
+{
+  "title": "Simple Breakout Game",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-games/breakout/index.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/67-pong/showcase/contribution2.png b/content/videos/challenges/67-pong/showcase/contribution2.png
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diff --git a/content/videos/challenges/7-solar-system-2d/showcase/contribution4.json b/content/videos/challenges/7-solar-system-2d/showcase/contribution4.json
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--- /dev/null
+++ b/content/videos/challenges/7-solar-system-2d/showcase/contribution4.json
@@ -0,0 +1,9 @@
+{
+  "title": "Solar System Simulation",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/solar_system.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/challenges/7-solar-system-2d/showcase/contribution4.png b/content/videos/challenges/7-solar-system-2d/showcase/contribution4.png
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diff --git a/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.jpg b/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.jpg
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index f48c3d7f4..d9e0958aa 100644
--- a/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.json
+++ b/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.json
@@ -5,5 +5,5 @@
     "url": "https://github.com/vislupus"
   },
   "url": "https://vislupus.github.io/p5-simulations/random_walkers_perlin_noise.html",
-  "submittedOn": "2023-08-16"
+  "submittedOn": "2025-01-10"
 }
diff --git a/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.png b/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution2.png
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diff --git a/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution3.json b/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution3.json
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--- /dev/null
+++ b/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution3.json
@@ -0,0 +1,9 @@
+{
+  "title": "Random walker",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/random_walkers.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution3.png b/content/videos/noc/1-vectors/1-what-is-a-vector/showcase/contribution3.png
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diff --git a/content/videos/noc/2-forces/2-mass-and-acceleration/showcase/contribution2.json b/content/videos/noc/2-forces/2-mass-and-acceleration/showcase/contribution2.json
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--- /dev/null
+++ b/content/videos/noc/2-forces/2-mass-and-acceleration/showcase/contribution2.json
@@ -0,0 +1,9 @@
+{
+  "title": "Applying forces to a ball with mass",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/ball_apply_force_and_mass_mult.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/noc/2-forces/2-mass-and-acceleration/showcase/contribution2.png b/content/videos/noc/2-forces/2-mass-and-acceleration/showcase/contribution2.png
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+++ b/content/videos/noc/2-forces/5-gravitational-attraction/showcase/contribution3.json
@@ -0,0 +1,9 @@
+{
+  "title": "Gravitational attraction",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/gravitational_attraction.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/noc/2-forces/5-gravitational-attraction/showcase/contribution3.png b/content/videos/noc/2-forces/5-gravitational-attraction/showcase/contribution3.png
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@@ -0,0 +1,9 @@
+{
+  "title": "Wheel of fortune",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/wheel_of_fortune.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/noc/3-angles/2-angular-motion/showcase/contribution2.png b/content/videos/noc/3-angles/2-angular-motion/showcase/contribution2.png
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@@ -0,0 +1,9 @@
+{
+  "title": "Cannonball shooting",
+  "author": {
+    "name": "Nikola Bozhinov",
+    "url": "https://github.com/vislupus"
+  },
+  "url": "https://vislupus.github.io/p5-simulations/ball_cannon.html",
+  "submittedOn": "2025-01-10"
+}
diff --git a/content/videos/noc/3-angles/2-angular-motion/showcase/contribution3.png b/content/videos/noc/3-angles/2-angular-motion/showcase/contribution3.png
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