Okay, this is actually a two part question.
1. If you could take one video game system from the past, that was not a successfull system, and you could ater History and make that system a huge hit, which would it be? Why? And if it was successful, how would the current video game landscape be altered?
2. If you could take one video game system from the past, or even the present, that is a very successful system, and you could alter History or the Present and make it a complete failure, which one would it be? Why? And if you did make the system tank, how would it alter the current video game landscape?
Here is my answer to the two above questions
1. I would take the 3DO system and I would change History and have had the 3DO system be a huge success. The reason why, is that I think that the 3DO system was way ahead of it's time technologically, and if it was super successfull and if it had all the 3rd party support behind it, then I think we would have seen some really incredible games come out during those years. If it had been the most successful system of the 32/64 bit Era, then the video game world would look very different today. Sony would be just another player in the game, rather than this arrogant super power that it has become. Nintendo might be in a better position, because it wouldn't have been so completely dominated by another Japanese rival. And we might all be playing the 3DO 3 right now. How weird would that be? The big downside with me doing this though, is that Electronic Arts would become an even bigger super power than they already are, because they had such an under the table investment in 3DO.
2. If I could totally ruin the success of any particular system, it would be without a doubt the PS2. I was a fan of Sony during the PS1 reign, but ever since the PS2, I have turned into almost a Sony Hater type of gamer. They promised the world with the PS2, talking about how it would deliver all these never before seen experiences, and the emotion engine and how it would be so revolutionary. Bah Humbug! The PS2 is a technological Dud if you ask me. Plus their complete and total arrogance is a definite turn off. They are so full of themselves and they think that they can do no wrong and that they are just going to totally dominate video gaming for the forseeable future. Now, if the PS2 was wildly Unsuccessful, then both Microsoft and Nintendo, and even Sega would be in a much much better situation right now. Sega might still have their Dreamcast, which by the way would have been my second choice, right behind the 3DO in terms of changing it's fortunes for the better. Nintendo's GameCube would be in a much better spot, and companies like Electronic Arts and other major companies would be forced to actually take some real advantage of the XBOX's power rather than just port over Crappy PS2 games to that system.