diff --git a/resources/graphics/symbols/blocks/block01-0016.png b/resources/graphics/symbols/blocks/block01-0016.png
index bf2299c..fc0dbc2 100644
Binary files a/resources/graphics/symbols/blocks/block01-0016.png and b/resources/graphics/symbols/blocks/block01-0016.png differ
diff --git a/resources/graphics/symbols/blocks/block01-0017.png b/resources/graphics/symbols/blocks/block01-0017.png
index 8b41e49..cdb9e75 100644
Binary files a/resources/graphics/symbols/blocks/block01-0017.png and b/resources/graphics/symbols/blocks/block01-0017.png differ
diff --git a/resources/graphics/symbols/blocks/block01-0018.png b/resources/graphics/symbols/blocks/block01-0018.png
new file mode 100644
index 0000000..76246f1
Binary files /dev/null and b/resources/graphics/symbols/blocks/block01-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block02-0018.png b/resources/graphics/symbols/blocks/block02-0018.png
new file mode 100644
index 0000000..467a06b
Binary files /dev/null and b/resources/graphics/symbols/blocks/block02-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block03-0018.png b/resources/graphics/symbols/blocks/block03-0018.png
new file mode 100644
index 0000000..26f97a5
Binary files /dev/null and b/resources/graphics/symbols/blocks/block03-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block04-0018.png b/resources/graphics/symbols/blocks/block04-0018.png
new file mode 100644
index 0000000..e5a4ab1
Binary files /dev/null and b/resources/graphics/symbols/blocks/block04-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block05-0018.png b/resources/graphics/symbols/blocks/block05-0018.png
new file mode 100644
index 0000000..e1a79f6
Binary files /dev/null and b/resources/graphics/symbols/blocks/block05-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block06-0018.png b/resources/graphics/symbols/blocks/block06-0018.png
new file mode 100644
index 0000000..7a4c627
Binary files /dev/null and b/resources/graphics/symbols/blocks/block06-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block07-0018.png b/resources/graphics/symbols/blocks/block07-0018.png
new file mode 100644
index 0000000..86eeeb7
Binary files /dev/null and b/resources/graphics/symbols/blocks/block07-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block08-0018.png b/resources/graphics/symbols/blocks/block08-0018.png
new file mode 100644
index 0000000..8b40214
Binary files /dev/null and b/resources/graphics/symbols/blocks/block08-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block09-0018.png b/resources/graphics/symbols/blocks/block09-0018.png
new file mode 100644
index 0000000..208466b
Binary files /dev/null and b/resources/graphics/symbols/blocks/block09-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block10-0018.png b/resources/graphics/symbols/blocks/block10-0018.png
new file mode 100644
index 0000000..482c420
Binary files /dev/null and b/resources/graphics/symbols/blocks/block10-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block11-0018.png b/resources/graphics/symbols/blocks/block11-0018.png
new file mode 100644
index 0000000..e8046a8
Binary files /dev/null and b/resources/graphics/symbols/blocks/block11-0018.png differ
diff --git a/resources/graphics/symbols/blocks/block12-0018.png b/resources/graphics/symbols/blocks/block12-0018.png
new file mode 100644
index 0000000..11bbc5f
Binary files /dev/null and b/resources/graphics/symbols/blocks/block12-0018.png differ
diff --git a/resources/graphics/tiles/indoor/ground01.png b/resources/graphics/tiles/indoor/ground01.png
index c863af7..5d68468 100644
Binary files a/resources/graphics/tiles/indoor/ground01.png and b/resources/graphics/tiles/indoor/ground01.png differ
diff --git a/resources/graphics/tiles/indoor_old/ground01.png b/resources/graphics/tiles/indoor_old/ground01.png
new file mode 100644
index 0000000..c863af7
Binary files /dev/null and b/resources/graphics/tiles/indoor_old/ground01.png differ
diff --git a/resources/graphics/tiles/indoor/ground02.png b/resources/graphics/tiles/indoor_old/ground02.png
similarity index 100%
rename from resources/graphics/tiles/indoor/ground02.png
rename to resources/graphics/tiles/indoor_old/ground02.png
diff --git a/resources/graphics/tiles/indoor/ground03.png b/resources/graphics/tiles/indoor_old/ground03.png
similarity index 100%
rename from resources/graphics/tiles/indoor/ground03.png
rename to resources/graphics/tiles/indoor_old/ground03.png
diff --git a/resources/graphics/tiles/indoor/ground04.png b/resources/graphics/tiles/indoor_old/ground04.png
similarity index 100%
rename from resources/graphics/tiles/indoor/ground04.png
rename to resources/graphics/tiles/indoor_old/ground04.png
diff --git a/resources/graphics/tiles/indoor/ground05.png b/resources/graphics/tiles/indoor_old/ground05.png
similarity index 100%
rename from resources/graphics/tiles/indoor/ground05.png
rename to resources/graphics/tiles/indoor_old/ground05.png
diff --git a/resources/graphics/tiles/indoor/ground06.png b/resources/graphics/tiles/indoor_old/ground06.png
similarity index 100%
rename from resources/graphics/tiles/indoor/ground06.png
rename to resources/graphics/tiles/indoor_old/ground06.png