Evolution/Video Games/Akiyama Ryo series

Appearances

Digimon Adventure: Anode Tamer & Cathode Tamer

For the most part, evolution is not a mechanic in and of itself. However, there are two related mechanics:

• Digimon can learn Variable Moves which, according to a Nanimon, temporarily evolve them into the target Digimon long enough to perform one of its attack techniques.
• Three Digimon—Numemon, Otamamon and Bakemon—evolve into, respectively, Scumon, Gekomon and Soulmon when they are traded between players.

Additionally, the main antagonist Millenniumon is the result of a fusion between Mugendramon of the Dark Masters and a Chimairamon. In the final dungeon, Millenniumon is fought first in the form of either Chimairamon or Mugendramon, before returning to its true Milleniumon form to be fought again.

Digimon Adventure 02: Tag Tamers

Fundamentally, once a Digimon gains enough experience points, it will automatically evolve into the next available Digimon in its evolution line. A Digimon's evolution line is pre-set based on which of the 70 distinct Digitamas, identified by both a name provided by Digitamamon and an unseen number, to which it belongs.

Evolution is one-way and cannot manually be reversed, but once the Digimon reaches the end of its lifespan—i.e. once their lifespan (Y) stat gets high enough, signified by a cross appearing next to them in menus—it will revert to its Baby I form and lose all EXP and learned techniques, starting its evolution from the very beginning.

Additionally, some evolution lines feature two Adult, Perfect and/or Ultimate forms. In these cases, one Digimon of a given level (the "higher" Digimon) can only be evolved into if the Digimon has any Digimental equipped, and otherwise, it will evolve into the other Digimon of that level (the "lower" Digimon). Likewise, in some cases where there is only one Ultimate form in the line, a Digimon cannot evolve into that Ultimate form unless it has a Digimental equipped.

Jogress

Gaining access to new evolutions revolves around Jogressing Digimon at Digitamamon's Jogress Room. Any two Digimon who are at Child level or higher may be Jogressed together to produce a Digitama, which immediately hatches into a Baby I Digimon. The resulting Digitama is based on which Digitamas the two parents belonged to or, in certain special cases, their Digimon species at the time of Jogressing, and Jogressing certain combinations of Digitamas will yield particular Digitamas.

Digitamas are sorted by a rank system from 1 to 9, and Jogressing will often result in a Digitama of a higher rank than the parents. In addition to having increased stats, higher-ranked Digitamas generally have greater access to more powerful Digimon and/or Digimon of higher Generations. This also includes better variants of the same evolution lines, which add Digimon of higher Generations.

For example: There are two Digitamas that yield V-mon. The first that they player can encounter is Digitama #1 (rank 2), the "V-mon" Digitama. The furthest that a V-mon of this Digitama line can evolve, assuming it meets all other requirements, is to its Adult form, XV-mon, and the evolution line ends there.
The second is Digitama #22 (rank 4), the "Imperialdramon" Digitama, which is formed by Jogressing an XV-mon from Digitama #1 with a Stingmon from Digitama #2 (rank 2), the "Wormmon" Digitama. This line adds Paildramon and Imperialdramon as, respectively, Perfect and Ultimate forms, so a Digimon belonging to the Digitama #22 line (assuming it meets all other requirements) can evolve all the way to Imperialdramon.

Every time that a Jogress is performed, the resulting Digimon will gain Jogress Points (JP). In addition to the EXP requirement, Adult, Perfect and Ultimate Digimon may only be evolved into if the Digimon also meets a minimum JP requirement for each; both EXP and JP requirements get progressively higher for higher-ranked Digitamas.

Armor Evolution

Five Digimon species—V-mon, Hawkmon, Armadimon, Patamon, Tailmon—may also use Armor Evolution, which works as a special type of attack technique. Having a matching Digimental equipped allows the Digimon to learn the resulting Armor Digimon's attack technique; using this technique in battle will cause it temporarily evolve into that Armor Digimon long enough to perform that attack techniques, before returning to its original form.

Digimon Adventure 02: D1 Tamers

In Digimon Adventure 02: D1 Tamers, both natural evolution and Armor Evolution work near-identically to how they did in Digimon Adventure 02: Tag Tamers, save for the following changes.

For natural evolution:

• There are now a total of 79 Digitamas. Some Digitama evolution lines from Tag Tamers have been altered or moved to a different identifying number.
• A new rare item, the JogPlus 「ジョグプラス」, is introduced. Using it gives the chosen Digimon 5 JP, helping to speed up gaining enough JP to meet evolution requirements. Although it is rare, it can still be infinitely farmed by repeatedly playing through the dungeons in which it can spawn (Plush Tower, Angel Tower, Undead Box, any of the Four Holy Beasts' dungeons).
• A tenth Digitama rank is added, exclusive to new Digitama evolution lines that yield two bonus Digimon: Archnemon (#21) and Mummymon (#79).
• In the Jogress Room, Digitamamon now directly tells the player the identifying number of the Digitama of any Digimon in their party.
• The mechanic of certain Jogresses requiring that parents be of particular species within a given Digitama line has been removed entirely. Results are now consistent regardless of parents' current form.
• A Digimon's lifespan coming to an end may be delayed by equipping a Digimental of Life.

For Armor Evolution:

• Armor Evolution techniques do not need to be learned by winning a battle like before. Instead, as long as the appropriate Digimental is equipped, the Armor Evolution technique is automatically available in the Digimon's sixth technique slot (reserved for techniques bestowed by equippped Digimentals).

Additional Information

References	Notes