diff --git a/piste3d.rb b/piste3d.rb
new file mode 100644
index 0000000..6a54c39
--- /dev/null
+++ b/piste3d.rb
@@ -0,0 +1,24 @@
+require './piste.rb'
+
+class Piste3d < Piste
+  def initialize(x,y,z)
+    @x = x
+    @y = y
+    @z = z
+  end
+
+  def to_s
+    "(#{@x}, #{@y}, #{@z})"
+  end
+
+  def etaisyys_origosta
+    Math.sqrt(@x*@x + @y*@y + @z*@z)
+  end
+
+  def siirra(dx, dy, dz)
+    @x += dx
+    @y += dy
+    @z += dz
+  end
+
+end
\ No newline at end of file
diff --git a/varipiste.rb b/varipiste.rb
new file mode 100644
index 0000000..fd61500
--- /dev/null
+++ b/varipiste.rb
@@ -0,0 +1,14 @@
+require './piste.rb'
+
+class Varipiste < Piste
+  def initialize(x, y, color)
+    @x = x
+    @y = y
+    @color = color
+  end
+
+  def to_s
+    "(#{@x}, #{@y}) #{@color}"
+  end
+
+end
\ No newline at end of file