diff --git a/assets/world/ground_I.png b/assets/world/ground_I.png new file mode 100644 index 0000000..9015fe1 Binary files /dev/null and b/assets/world/ground_I.png differ diff --git a/assets/world/ground_II.png b/assets/world/ground_II.png new file mode 100644 index 0000000..7c6ef01 Binary files /dev/null and b/assets/world/ground_II.png differ