diff --git a/tiles_png/community/bytewerk/LICENSE b/tiles_png/community/bytewerk/LICENSE
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--- /dev/null
+++ b/tiles_png/community/bytewerk/LICENSE
@@ -0,0 +1,121 @@
+Creative Commons Legal Code
+
+CC0 1.0 Universal
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+4. Limitations and Disclaimers.
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diff --git a/tiles_png/community/bytewerk/cija_32x32_expansion for Pipoya_CC0.png b/tiles_png/community/bytewerk/cija_32x32_expansion for Pipoya_CC0.png
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diff --git a/tiles_png/community/cert/.gitignore b/tiles_png/community/cert/.gitignore
new file mode 100644
index 00000000..ed2d171f
--- /dev/null
+++ b/tiles_png/community/cert/.gitignore
@@ -0,0 +1,143 @@
+# Created by .ignore support plugin (hsz.mobi)
+### Python template
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+*.ase
+.idea/
diff --git a/tiles_png/community/cert/CONTRIBUTE.md b/tiles_png/community/cert/CONTRIBUTE.md
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index 00000000..89b64d92
--- /dev/null
+++ b/tiles_png/community/cert/CONTRIBUTE.md
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+# How-to Contribute
+
+* Take a look on https://howto.rc3.world/maps.html
+* Read the README as well.
+
+## Install pre-commit hook for image checks.
+* pip3 install -r requirements.txt
+* ln scripts/check_imgs.py .git/hooks/pre-commit
+
+## What to contribute
+### Sprites
+* Only commit sprites you created yourself.
+* Only single sprites, we will (re)generate the spritesheets for you.
+* Make sure your sprite is dividable by 32px on both axis.
+* We generate our spritesheets in alphabetical order, would be nice if your new sprites are already named to take their place at the end of the list.
+
+## Get your stuff in this repository
+* Create a pull request (preferred)
+* Send a mail to deinkoks@cert.ccc.de if your not familiar with git
diff --git a/tiles_png/community/cert/LICENSE.md b/tiles_png/community/cert/LICENSE.md
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index 00000000..dca3a638
--- /dev/null
+++ b/tiles_png/community/cert/LICENSE.md
@@ -0,0 +1,17 @@
+# Fremde Grafiken
+Zu folgenden Grafiken liegen uns leider keine Lizenzinformationen vor. Wir besitzen keine Rechte an ihnen und können entsprechend auch keine erteilen:
+
+* 
+
+## Milkian
+Diese Grafiken wurden von https://www.deviantart.com/milkian erstellt
+* imgs/tilesheets/tilesets_deviant_milkian_1.png
+* imgs/tilesheets/AceSet-Hospital.png
+
+## dungeon Tileset
+imgs/tilesheets/dungeon.png stammt von https://opengameart.org/content/dungeon-tileset-4 und ist public domain. Thanks to HorusKDI.
+
+# Unsere Grafiken.
+Alles andere Lizensieren wir als CERT (cert.ccc.de) unter der CC-BY-SA
+## CC-BY-SA
+Dieses Material steht unter der Creative-Commons-Lizenz Namensnennung - Weitergabe unter gleichen Bedingungen 4.0 International. Um eine Kopie dieser Lizenz zu sehen, besuchen Sie http://creativecommons.org/licenses/by-sa/4.0/.
diff --git a/tiles_png/community/cert/README.md b/tiles_png/community/cert/README.md
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index 00000000..bddb5096
--- /dev/null
+++ b/tiles_png/community/cert/README.md
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+# From cert.ccc.de with love
+This are our tiles/sprites for the rc3 workadventure.
+
+* Composed tilesets are located in imgs/tilesheets
+* Sets ending with _set are deprecated, please don't use them anymore.
+
+## cert_safety
+We provide a special cert_safety tileset for everyone to keep their virtual space as safe as possible.
+
+## check_imgs.py
+We strongly recommend using this script as pre-commit script.
+It checks all image dimensions and compiles a tilesheet for every directory if wanted.
+
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index 00000000..f164f832
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diff --git a/tiles_png/community/cert/imgs/tilesheets/tilesets_deviant_milkian_1.png b/tiles_png/community/cert/imgs/tilesheets/tilesets_deviant_milkian_1.png
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diff --git a/tiles_png/community/cert/scripts/check_imgs.py b/tiles_png/community/cert/scripts/check_imgs.py
new file mode 100755
index 00000000..cfd8b0e5
--- /dev/null
+++ b/tiles_png/community/cert/scripts/check_imgs.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+from PIL import Image
+import sys
+import os
+
+BASE_DIR = 'imgs'
+COMPOSE_TILESHEETS = True
+TILESHEET_WIDTH = 512
+TILESHEET_HEIGTH = 2048
+
+class Row():
+    def __init__(self, width=TILESHEET_WIDTH, height=32):
+        self.width = width
+        self.height = height
+        self.remainingWidth = width
+        self.sprites = []
+
+    def append(self, Img):
+        x,y = Img.size
+        if (self.remainingWidth  - x) < 0:
+            raise Exception('ImageTooLarge')
+        self.height = max(self.height, y)
+        if self.height > TILESHEET_HEIGTH:
+            raise Exception("Tilesheet full")
+        self.remainingWidth = self.remainingWidth - x
+        self.sprites.append(Img.convert(mode='RGBA'))
+        return self.remainingWidth
+
+    def render(self):
+        row = Image.new('RGBA', (self.width, self.height),(255,255,255,0))
+        x_offset = 0
+        for img in self.sprites:
+            x,y = img.size
+            row.alpha_composite(img, (x_offset,0))
+            x_offset += x
+        return row
+
+class Spritesheet():
+    def __init__(self, width=TILESHEET_WIDTH, height=TILESHEET_HEIGTH):
+        self.width = width
+        self.height = height
+        self.rows = []
+
+    def append(self, Img):
+        x,y = Img.size
+        # self.height += y
+        self.rows.append(Img)
+
+    def render(self):
+        sheet = Image.new('RGBA', (self.width, self.height),(255,255,255,0))
+        y_offset = 0
+        for img in self.rows:
+            x,y = img.size
+            sheet.alpha_composite(img, (0,y_offset))
+            y_offset += y
+        return sheet
+
+if __name__ == "__main__":
+    print("Check images dimensions")
+    print('Absolute path:', os.getcwd() + '/imgs')
+    for root, dirs, files in os.walk(BASE_DIR):
+        for file in files:
+         if file.endswith('.png'):
+          x,y = Image.open(os.path.join(root, file)).size
+          if not(x % 32 == y % 32 == 0 and x <= TILESHEET_WIDTH):
+              sys.exit("%s has wrong dimensions." % file)
+
+
+    if COMPOSE_TILESHEETS:
+        print("Generate Tilesheets")
+        for dir in os.listdir(BASE_DIR):
+            if dir != "tilesheets":
+                name = dir
+                print("Processing:", dir)
+                sheet = Spritesheet()
+                row = Row()
+                for file in sorted(os.listdir(os.path.join(BASE_DIR, dir)),key=str.lower):
+                    try:
+                        if file.endswith('.png'):
+                            row.append(Image.open(os.path.join(BASE_DIR, dir, file)))
+                    except:
+                        # new row
+                        sheet.append(row.render())
+                        row = Row()
+                        row.append(Image.open(os.path.join(BASE_DIR, dir, file)))
+                sheet.append(row.render())
+                sheet.render().save(os.path.join(BASE_DIR, 'tilesheets', name + '.png'))
+
diff --git a/tiles_png/community/cert/scripts/requirements.txt b/tiles_png/community/cert/scripts/requirements.txt
new file mode 100644
index 00000000..7e2fba5e
--- /dev/null
+++ b/tiles_png/community/cert/scripts/requirements.txt
@@ -0,0 +1 @@
+Pillow
diff --git a/tiles_png/cy/.gitkeep b/tiles_png/cy/.gitkeep
new file mode 100644
index 00000000..e69de29b
diff --git a/tiles_png/cy/text.png b/tiles_png/cy/text.png
new file mode 100644
index 00000000..f78f1df9
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diff --git a/tiles_png/cy/textgenerator b/tiles_png/cy/textgenerator
new file mode 100644
index 00000000..206a2280
--- /dev/null
+++ b/tiles_png/cy/textgenerator
@@ -0,0 +1,2 @@
+convert your own text to tile:
+https://rc3.pages.git.cccv.de/world-maps/tools/textGenerator.html
\ No newline at end of file
diff --git a/tiles_png/deco/.gitkeep b/tiles_png/deco/.gitkeep
new file mode 100644
index 00000000..e69de29b
diff --git a/tiles_png/deco/dk_lines.png b/tiles_png/deco/dk_lines.png
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