Antweight World Series is a robotic competition in which Antweight robots fight against one another. The first AWS was held at Reading in 1999 and the latest event, AWS 34 was held in March 2011.

AWS rules

• A robot whose final drive output rotates through more than 180 degrees (e.g. wheels) cannot be heavier than 150 grams.
• Walker - A robot whose final drive output rotates through less than 180 degrees (e.g. legs) cannot be heavier than 225 grams.
• Clusterbot - A robot which consists of two or more parts (e.g. two half sized robots/botlets) cannot be heavier than 75 grams.

Fluid based weapons (treacle guns, etc.), Glue or sticky pad weapons, String or entanglement weapons, Flame based weapons, The use of electricity as a weapon, Explosive weapons, Rotating weapons that may shatter (as opposed to breaking off) are not allowed in AWS.