Over the past year, it has become evident that despite several important differences that still persist, TCGP as a mobile implementation of the Pokémon TCG is on track to achieving "feature parity" (in development terms) with the regular or physical TCG. First, Pokémon Tool cards were introduced, then Stadium cards followed later. It seems that almost every kind of card you can regularly find in the physical TCG have made it in... except the Energy cards. The question then lies on the possibility of implementing them; this post then serves to discuss that possibility as well as complications that are interrelated with that possibility.
It is important to make the reminder that Energy works differently in TCGP, and quite so at that. Here, Energy depends on the Energy Zone, and it generates specific ones tied to a deck and even some different ones if certain cards are played. Therefore, the possibility of making the implementation work seems to have to consider keeping this system included rather than leaving it out. Meanwhile, the deck building screen shows that potentially more cards could be included in a deck, up to 30 instead of the usual 20, which may indicate that these extra 10 cards could be used to accommodate Energy cards if they do appear.
As for how things might work out, it seems that the Energy cards could be loaded into the Energy Zone, and at the first opportunity players are able to attach Energy as would normally occur in a TCG match, an Energy card is drawn to be attached to a Pokémon. Supposing that a Pokémon is Knocked Out, an Energy card could also be brought back into play by a card that interacts with Energy in the discard pile; this is also in line with the fact that the game keeps track of discarded Energy after a KO in addition to cards.
Meanwhile, other complications would involve the kinds of Energy cards that could or would be included. Cards of the commonly used types would be a given, of course, but the possibility of having unique cards for them might not be out of the question. Then there are Special Energy cards, which in regular TCG exist to provide certain Energy in possibly larger amounts but under certain restrictions; implementing them in TCGP might require a bit of "finagling", yet it could be done, given the appearance of other special cards.
With the way that things are developing in TCGP, "feature parity" - even if not complete and/or thorough - with the regular TCG looks to be a set goal for it, albeit one that most players may not perceive. The next step for that might just be implementing Energy cards in some way, even if the possibility is either outlandish or superfluous (or both) by the state of the game. After that, TCGP might very well be considered a really good implementation.
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