One of the many Modules carried by the HTE Transport Ship is the multi-purpose Bonus Module. As the Module rotates, it continuously shifts its appearance, gradually spelling out the word B-O-N-U-S. Collect one, and then that letter is added to your five bonus slots. Collect all five symbols, in any order, to complete the bonus sequence. Completing the bonus sequence has several advantages: 1. A one-time credit bonus of +999 credits. 2. Additional modules are more likely to yield additional +250 credits, further increasing your score. 3. The ability to access the secret bonus.