The game uses a simplistic experience point system which gives the player additional levels (and hit points) both from winning battles, and from successfully solving puzzles throughout Chichen Itza. As such, the player is kept from advancing too far, or too early, simply because he won't be strong enough yet to contend with the higher-level monsters he's sure to encounter. Although, occasionally the player may be defeated despite being strong enough. The game also came packaged with a small guide which represented the professor's journal, it is written in an awkward cursive form and can be hard to understand, as well as speaking in riddles, but can often aid the player if read correctly. While there are a few ruins which are strictly for show and cannot be entered, the vast majority can.