My pokédex currently lists 108 types as “owned”. This doesn’t mean I currently own them all, just that I’ve owned each of them at some point. Some have been traded away or evolved.
The 42 remaining unowned types can be divided into four categories. First, there are those that I can only obtain by trading. There are 13 species like this (including one obtainable through NPC trade I haven’t been able to make yet), although 5 of them are evolved forms of other things I could trade for, so I could potentially obtain them all by trading with other players only 7 times. I have purchased a second GBA from a reader of this blog, who has my thanks and can take credit here if he wishes, so trading will be within the realm of possibility again once I have that in hand.
Second, there are those that I can catch, if I go to the right places. There are 9 species like this, including the elusive Kangaskhan and Tauros. The remaining types, I held off on catching because they’re evolved forms of things that I have, and a pokémon that has been evolved by hand is generally superior to one that’s caught in its evolved form.
Third, there are things that I can evolve from pokémon I have by using special stones on them. (The game does not specify how the stone is applied, and perhaps it’s better not to know.) There are 15 species like this, including the three evolutions of the Eevee, a unique pokémon. I’ve been putting off evolving the Eevee for flexibility in trading: I don’t want to turn it into a Flareon and then find out that someone else wants a Jolteon that I can no longer produce. I’ve been putting off evolving the rest of them because the evolved forms generally have limited opportunities for advancement: they have better stats than their unevolved forms, but they can’t learn all the attacks that their unevolved forms can. As long as there was a possibility that I’d keep using them, and thus levelling them up, it seemed a good idea to keep them unevolved. But I’ll probably abandon this by and by.
That means I currently have only 5 pokémon that I have any real reason to level up. The maximum party size is 6, so I could take all five of them out to the depths of the Unknown Dungeon at once, with Adrian in the lead. But in one case, I’m hesitant to evolve it, lest I repeat a mistake.
At the very start of the game, the player is given the choice between three pokémon: a Charmander, a Bulbasaur, or a Squirtle — basic fire, grass, and water types. This is the only point in the game where you have the opportunity to obtain any of these types. Assuming that all players want as complete a pokédex as they can get, the smart thing to do is for players to trade their initial choices with each other immediately, then level them up until they evolve and trade them again. Since I didn’t know what I was doing, I did not do this. Evolution only goes one way. Consequently, my Squirtle (Godwin) is now in its final evolution, and an unfair trade for anyone with the Charmander and Bulbasaur I sorely need.
Later in the game, the player gets another similar choice between an Omanyte and a Kabuto, two fossilized pokémon that can be revived by the scientists on Cinnabar Island. As with the initial pokémon, both of these species can evolve through experience. If I evolve my Kabuto, what will I have that’s as valuable as an Omanyte?