--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gamelib/products.py	Sun May 06 11:59:20 2012 +0200
@@ -0,0 +1,30 @@
+from gamelib import research
+
+
+class Product(object):
+    NAME = None
+    PREREQUISITES = ()
+
+    def __init__(self):
+        self.points = 0
+
+    def spend_points(self, points):
+        self.points += points
+
+
+class MachineGun(Product):
+    NAME = "Machine gun"
+
+
+class TeslaGun(Product):
+    NAME = "Tesla gun"
+    PREREQUISITES = (
+        (research.Tesla, 1),
+        )
+
+
+class DoomsdayVirus(Product):
+    NAME = "Doomsday virus"
+    PREREQUISITES = (
+        (research.BioGenetics, 5),
+        )