Some insane very very dedicated fan made a Pokemon game that's at least as good as the original (I think it's actually better). You can download the demo for free here.
This is the starting town:

I don't usually care about music in a game, but I love it in that one (especially in the second town). It has the exact feel of the original game, but all the pokemon are new (and have the expected punny names -- Cubzero, an ice cat, is my current favorite one).

Larger, non-pixel version.
For something fan-made, it's surprisingly bug-free. I'm having lots of fun playing it! If you like Pokemon, you should check it out as well.
This is the starting town:

I don't usually care about music in a game, but I love it in that one (especially in the second town). It has the exact feel of the original game, but all the pokemon are new (and have the expected punny names -- Cubzero, an ice cat, is my current favorite one).

Larger, non-pixel version.
For something fan-made, it's surprisingly bug-free. I'm having lots of fun playing it! If you like Pokemon, you should check it out as well.