diff --git a/design/contributions.md b/design/contributions.md
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+++ b/design/contributions.md
@@ -1,25 +1,30 @@
 # Creative Commons Contributions
 
 ## 3D-Assets
- - [Antique Dresser](https://sketchfab.com/3d-models/boy-room-19035fc846034003b76e2914ba6dd7a6) by [Darren McNerney 3D](https://sketchfab.com/DarrenMcnerney3D) CC-BY
- - [Wardrobe - Low poly](https://skfb.ly/ow6TJ) by [ixMkc1](https://sketchfab.com/ixMkc1) CC-BY
- - [Simple Bean Bag](https://sketchfab.com/3d-models/simple-bean-bag-64d111cec3d842f09cbb8c68b1e49c8d) by [AleixoAlonso](https://sketchfab.com/AleixoAlonso) CC-BY
- - [Cobwebs](https://skfb.ly/ouu9C) by [DJMaesen](https://sketchfab.com/bumstrum) CC-BY
- - [Laptop](https://skfb.ly/6RVFt) by [Aullwen](https://sketchfab.com/Aullwen) CC-BY
- - [Home Speaker Bar](https://skfb.ly/oqZnY) by [re1monsen] CC-BY
- - [Designer Storage Box 2](https://sketchfab.com/3d-models/designer-storage-box-2-db1275e988484908afcf44d0487aed69) by [Raphael Escamilla](https://sketchfab.com/Raffey) CC-BY
- - [Carpet Fluffy](https://sketchfab.com/3d-models/carpet-fluffy-435d64ef1e36457790000c6b6aa4b8b2) by [polybEAN](https://sketchfab.com/polybean) CC-BY
- - [backpacks blockout homework](https://sketchfab.com/3d-models/backpacks-blockout-homework-e80686790d884b21b52f2308e51af9c6) by [Fellming](https://sketchfab.com/Fellm) CC-BY
- - [Restaurant Kitchen Set](https://sketchfab.com/3d-models/restaurant-kitchen-set-part-1-129dd2f84879477ea261b422d21491f4) by [soidev](https://sketchfab.com/soidev), CC-BY
- - [Scandinavian Kitchen Kit](https://sketchfab.com/nkilstrup/collections/scandinavian-kitchen-kit-7abc790a7c744579801101d9c3655f37), [House Plants](https://sketchfab.com/3d-models/house-plants-1347ac536bea469281cc07d68e076654) and [Living Room Props](https://sketchfab.com/3d-models/living-room-props-cee72686f7534fdea99ab04d6177df22) by [Nicolai Kilstrup](https://sketchfab.com/nkilstrup), CC-BY
- - [Wooden kitchen](https://sketchfab.com/3d-models/wooden-kitchen-3c6f8352025540feb8d7019485bf20e4) by [Mieshu](https://sketchfab.com/miha.pop12), CC-BY
- - [Baked Goods](https://sketchfab.com/3d-models/baked-goods-d1ae09e3cb8343bc8790b15928452906) by [rigsters](https://sketchfab.com/rigsters), CC-BY
+ - [Antique Dresser](https://sketchfab.com/3d-models/boy-room-19035fc846034003b76e2914ba6dd7a6) by [Darren McNerney 3D](https://sketchfab.com/DarrenMcnerney3D), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Wardrobe - Low poly](https://skfb.ly/ow6TJ) by [ixMkc1](https://sketchfab.com/ixMkc1), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Simple Bean Bag](https://sketchfab.com/3d-models/simple-bean-bag-64d111cec3d842f09cbb8c68b1e49c8d) by [AleixoAlonso](https://sketchfab.com/AleixoAlonso), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Cobwebs](https://skfb.ly/ouu9C) by [DJMaesen](https://sketchfab.com/bumstrum), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Laptop](https://skfb.ly/6RVFt) by [Aullwen](https://sketchfab.com/Aullwen), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Home Speaker Bar](https://skfb.ly/oqZnY) by [re1monsen](https://sketchfab.com/re1monsen), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Designer Storage Box 2](https://sketchfab.com/3d-models/designer-storage-box-2-db1275e988484908afcf44d0487aed69) by [Raphael Escamilla](https://sketchfab.com/Raffey), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Carpet Fluffy](https://sketchfab.com/3d-models/carpet-fluffy-435d64ef1e36457790000c6b6aa4b8b2) by [polybEAN](https://sketchfab.com/polybean), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [backpacks blockout homework](https://sketchfab.com/3d-models/backpacks-blockout-homework-e80686790d884b21b52f2308e51af9c6) by [Fellming](https://sketchfab.com/Fellm), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Restaurant Kitchen Set](https://sketchfab.com/3d-models/restaurant-kitchen-set-part-1-129dd2f84879477ea261b422d21491f4) by [soidev](https://sketchfab.com/soidev), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Scandinavian Kitchen Kit](https://sketchfab.com/nkilstrup/collections/scandinavian-kitchen-kit-7abc790a7c744579801101d9c3655f37), [House Plants](https://sketchfab.com/3d-models/house-plants-1347ac536bea469281cc07d68e076654) and [Living Room Props](https://sketchfab.com/3d-models/living-room-props-cee72686f7534fdea99ab04d6177df22) by [Nicolai Kilstrup](https://sketchfab.com/nkilstrup), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Wooden kitchen](https://sketchfab.com/3d-models/wooden-kitchen-3c6f8352025540feb8d7019485bf20e4) by [Mieshu](https://sketchfab.com/miha.pop12), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Baked Goods](https://sketchfab.com/3d-models/baked-goods-d1ae09e3cb8343bc8790b15928452906) by [rigsters](https://sketchfab.com/rigsters), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
  - [Coffee Table 01](https://polyhaven.com/a/CoffeeTable_01) by [Fernando Quinn](https://polyhaven.com/all?a=Fernando%20Quinn), CC0
  - [Side Table 01](https://polyhaven.com/a/side_table_01) and [Wooden Display Shelves 01](https://polyhaven.com/a/wooden_display_shelves_01) by [James Ray Cock](https://www.artstation.com/jamesray), CC0
  - [Throw Pillows 01](https://polyhaven.com/a/throw_pillows_01) by [Serhii Khromov](https://www.artstation.com/serhiikhromov), CC0
  - [Gaming Console](https://polyhaven.com/a/gaming_console) by [Sean Buckley](https://www.artstation.com/sean_buckley98), CC0
  - [Painted Wooden Stool](https://polyhaven.com/a/painted_wooden_stool) by [Kirill Sannikov](https://www.artstation.com/k_sannikov)
  - [Subway Station & R46 Subway](https://sketchfab.com/3d-models/free-subway-station-r46-subway-ae5aadde1c6f48a19b32b309417a669b) by [Alex Murais](https://sketchfab.com/Xlay3D), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Low poly modern sofa](https://sketchfab.com/3d-models/low-poly-modern-sofa-free-model-4e112795595d40fcbfb5d369bb3b2105) by [Riejoncer](https://sketchfab.com/Riejoncer), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [Ulv Chirality](https://sketchfab.com/3d-models/arnt-shoes-ulv-chirality-ca5f23fceddc486192d737c957fcd8d0), [Ulv Arntorius](https://sketchfab.com/3d-models/arnt-shoes-ulv-arntorius-cb68a8bb36864c6fb567c087d20d6348), [DC Lynx OG](https://sketchfab.com/3d-models/arnt-shoes-dc-lynx-og-94628ad82ef24114b5d9f81370a5e9d3), [Ulv Age](https://sketchfab.com/3d-models/arnt-footwear-ulv-age-fb15e929fedc4cb58de334a99b0c9e26) and [Ulv Weehee](https://sketchfab.com/3d-models/arnt-footwear-ulv-weehee-45cb4523c3f24094bd73e31a4da9faae) by [Arnt Shoes](https://sketchfab.com/Arntorius), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+ - [City Props Collection volume 1](https://sketchfab.com/3d-models/city-props-collection-volume-1-32b8b82bb1e9489c993799c91967a916) by [TampaJoey](https://sketchfab.com/TampaJoey), [Sketchfab Free Standard Lisence](https://sketchfab.com/licenses)
+ - [Bus Stop Bench](https://sketchfab.com/3d-models/bus-stop-bench-2440cd661b104cc38a8ad014bf78080b) by [newfollow81](https://sketchfab.com/neverfollow81)
+ - [vending machine](https://sketchfab.com/3d-models/vending-machine-fb0516c9c6954e5dbeb420aaa48059c0) and [vending machine 2](https://sketchfab.com/3d-models/vending-machine-2-f33455fa709348d9bb80c4fc91cfa59c) by [wilsz95](https://sketchfab.com/wilsz95), [CC-BY 4.0](https://creativecommons.org/licenses/by/4.0/)
 
 ## Textures from polyhaven.com
 - [Rough Wood](https://polyhaven.com/a/rough_wood) by [Rob Tuytel](https://polyhaven.com/all?a=Rob%20Tuytel) CC-0
@@ -32,9 +37,11 @@
  - [Wood Substance 009](https://ambientcg.com/view?id=WoodSubstance009)
  - [Wicker 010 B](https://ambientcg.com/view?id=Wicker010B)
  - [Terrazzo 019 L](https://ambientcg.com/view?id=Terrazzo019L)
+ - [Metal 055 A](https://ambientcg.com/view?id=Metal055A)
  
 ## Wikimedia Commons
- - [Gebäude in Darmstadt](https://commons.wikimedia.org/wiki/File:Geb%C3%A4ude_in_Darmstadt.jpg) by [Neq00](https://commons.wikimedia.org/wiki/User:Neq00) CC-BY-SA 4.0
+ - [Gebäude in Darmstadt](https://commons.wikimedia.org/wiki/File:Geb%C3%A4ude_in_Darmstadt.jpg) by [Neq00](https://commons.wikimedia.org/wiki/User:Neq00), [CC-BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/deed.en)
+ - [Annalena Baerbock August 2021 in Kiel](https://commons.wikimedia.org/wiki/File:Annalena_Baerbock_August_2021_in_Kiel_09.jpg) by [Michael Brandtner](https://commons.wikimedia.org/wiki/User:Discostu), [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/deed.en)
  
 ## Illustrations
 
@@ -47,6 +54,10 @@
  + [Oh My Git](https://ohmygit.org/) by [bleeptrack](https://bleeptrack.de/) and [blinry](https://morr.cc/), Blue Oak Model License
  + [Ghostwriter]() by kde
 
+## Tools
+ - [PixelPlanets](https://github.com/Deep-Fold/PixelPlanets) by [DeepFold](https://github.com/Deep-Fold), [MIT](https://github.com/Deep-Fold/PixelPlanets/blob/main/LICENSE)
+ - [Space Backgrounds](https://ansimuz.itch.io/space-background) by [ansimuz](https://ansimuz.itch.io), "You may use these assets in personal or commercial projects. You may modify these assets to suit your needs."
+
 ## Music
  - [Foundations I by Azure Studios](https://azurestudios.bandcamp.com/album/foundations-i-24bit), CC-BY 3.0
  - Infinite Skies from [10 Ambient RPG Tracks](https://alkakrab.itch.io/free-10-rpg-game-ambient-tracks-music-pack-no-copyright) by [alkakrab](https://alkakrab.itch.io/) *"Absolutely Free For Commercial use."*