Frontier

Quick strategy

 * Hit spinner from left flipper and inline drops from right flipper.
 * First inline drop lights spinner and opens upper gate for bonus collect.

Long rules

 * The game has two bonuses: Animal Den Bonus and Frontier Bonus.
 * Collect animals to advance bonuses.
 * Each animal is 1,000 in bonus.
 * A-B-C and spot targets give you an animal in corresponding column.
 * Try to get the column you have the least of.
 * Bonus carries over from ball-to-ball.
 * Complete right drops to advance Animal Den bonus X.
 * Hit left inline drops to advance the Frontier Bonus X.
 * The first inline drop also lites the spinner for 1000 per spin.
 * Hitting an inline drop target opens the upper gate for frontier bonus collect.
 * Total bonus = (animals * 1000 * animal bonus X) + (frontier bonus * frontier bonus X)
 * Bonus X does not carry over from ball to ball.
 * Bob Matthews EM Guide