An SWP machine must offer the chance to win the jackpot on every game; however, the level of skill involved to do that is set so high as to be virtually impossible. Manufacturers have, at times, set the skill level so high that it is physically impossible to achieve this. Because there is no governing body for skill games, the only time this is brought into question is when the gaming authorities are alerted and take court action to prove or disprove that this is the case. In practice, this is very rare, as the gaming authorities have no jurisdiction over skill machines, and the only way for a prosecution to succeed is to prove that the game in question breaks the law in some way.