Question

Why was Pokèmon Mystery Dungeon - Red Rescue Team released on the GameBoy Advance but the others on the DS system?

Comments

Probably because of the generation. Same thing happen to Black 2, White 2, Ultra Sun and Ultra moon. So I think it's because there is no fourth gen Pokemon.
(There are references though.)

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It's probably so that people can play the games if they only have one of those systems.

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But the DS lite can play both...

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Maybe they wanted to make a game for people who only had a DSi.

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I dunno...

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Probably nothing to do with DSi considering that was released in 2008

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Maybe the developers were ESP and foresaw the release of the DSi.

Answer 1

It’s simple, the DS system was a gameboy when the other games were released and then the DS system came out and so they released games on the latest systems

Comments

But the GBA version and the DS version were released at the same time, but on different devices. I don't think this answers the question.