Cards
The cards for Mushiking have lengthwise barcodes for players to scan into the arcade machines, and come in several types. Later versions, however, changed this to a single crosswise bar code at the bottom of the card, before the bar code was removed from the front entirely. This was presumably to prevent people from simply printing out an image of the card online, and scanning the bar code on the reader.
Beetle cards represent the beetle characters the player can control. Each beetle card is marked with information on the beetle's species (name, Latin name, description, etc.) as well as the card's stats such as strength in the three move types and stamina as well as their base power, which is usually determined by the size of the beetle and rarity of the card. The Finishing Move indicates the beetle's "favored" move, which can cause major damage to the opponent if the player wins through a Finishing Move. Rare beetle cards are printed with a holographic background and is colored in either Bronze (for 160 Base power), Silver (for 180 Base power) or Gold (for 200 Base power). Several different editions, such as the Parallel Edition cards and the Adder Collection, have been released of the same cards.
Skill cards represent the abilities a beetle can use. A player can only scan one skill card per skill type. Every skill card requires a certain skill point number; if the number is equal to the beetle's skill point level, the result will be a perfect compatibility. If the beetle's skill point is greater than the skill, it results in a "good" compatibility. If the beetle's skill point is less than the skill point of the card, it will worsen the effectiveness of the skill used by that beetle.
Special Skill Cards are skill cards that may give a player the advantage over the opponent aside from an elaborate, damaging move. The skill point of Special Skill Cards is marked with an Exclamation Point ("!"). Special Skills are activated when certain conditions have been met, such as pressing a move on the first count of the countdown, experiencing a tie, etc. There are also rare, "upgraded" skill cards with certain low-level beetles' Finishing Moves. If the right skill card is scanned with the right beetle, the result will be a "Super Max" Compatibility and will deal tremendous damage if used. The upgraded skill cards are moves used by beetles with a Base Power range of 100 to 120, which gives them an advantage against rarer, stronger cards with a higher Base Power rating.
License cards can be scanned prior to the battle, which cause the machine to read off a certain title for the scanning player. These cards are normally awarded by Sega and other officiary bodies to winners of major Mushiking championships or tournaments, and are not dispensed by machines.