There are two additional honeycomb pieces in each of Gruntilda's Lair's nine realms, and six in Spiral Mountain. Collecting 18 of the 24 pieces will increase Banjo's energy bar from 5 to 8. The remaining six additional honeycombs, however, will not increase his maximum energy to nine and will simply function as bonuses. They do not appear on any map and cannot be accessed by any means other than finding them hidden around each level. In addition to these locations, there is one more spot where a honeycomb can be found - inside Banjo's head after you have completed the game once. This allows you to increase your maximum energy even further by collecting another three honeycombs. However, this location can only be accessed if you use a "Banjo Kazooie" cheat code at the title screen. There are several codes available and they all do the same thing - let you enter any level you want (even levels that have not been released yet!). Just make sure to enter a code that has not already been used during gameplay otherwise you won't be able to access Banjo's head again until you restart the game. If you find all the honeycombs in each realm but still want to complete the last realm (Spiral Mountain), there is a way to get an extra piece of honeycomb. At the end of each realm, there is a small tunnel with an egg in it.