Well, a part of me was against the idea of purchasing these games again as I already have physical copies of all three first gen games, but after putting each one into my gameboy color, I realised that they no longer keep their save files and so I caved in and purchased Yellow version.
After confirming my name with Professor Oak, the game started in my bedroom. After taking the free potion out of the PC in my room, I went downstairs to talk to my mother. She told me that Professor Oak was next door looking for me. However when I went next door the only person there was my rival's very kind sister who told me my rival had gone to the Professor's lab. I went there only to find that the Professor was not there either. So I went to leave town and, surprise surprise, the very man I was looking for appears out of nowhere and saves me from a wild Pikachu. Somehow he captures it in a pokeball without even lowering its health - I think he must have used a cheat code!
At Professor Oak's insistence I followed him to his lab where we met his Grandson, Gary, who was quite rude and immediately began complaining about having to wait around. Professor Oak told the little git to wait and then turned back to me and asked if I would like to take possession of the pokeball left on his table. I agreed and went to take it but Gary shoved me out of the way and took the pokeball for himself. Oak told him off but in the end let him get away with it and instead gave me the Pikachu he had just saved me from. Gary then had the nerve to challenge me to a battle! I didn't need to worry though. Gary's pokemon was an Eevee and Pikachu's first Thundershock managed to paralyse it. From there two more zaps took Eevee down while all it did in return was Tail Whip.
After the battle, Gary stormed off in an huff and Pikachu decided that he didn't want to stay inside his pokeball and would instead follow me around. I went north on Route 1 towards Viridian City and on the way I battled many Pidgey and Rattata. In Viridian City I visited the Mart and the guy behind the counter asked me to deliver a parcel to Oak, so back I went again! My effort was rewarded with a Pokedex! Gary turned up and got one too and then he told me he was going to get a Town Map from his sister and he would tell her not to let me have one. He went off laughing, but the joke was on him as his sister was more than happy to give me a map.
I went back to Viridian City and purchased some pokeballs before heading west to Route 22. Almost immediately I encountered a Mankey and caught it. I tried catching a male Nidoran, but I could only find them at level 2 and they kept fainting so in the end I caught a level 4 female. Remembering that a rival battle laid ahead I retreated to Viridian City to heal up and then went to Viridian Forest where I caught a Caterpie. I then began the arduous process of grinding the entire team up to a decent level. During this, I happened across a wild Pidgeotto at level nine. Its ferocious Gust attack made small work of my three newest team mates, but in the end Pikachu came through with a Thunder Wave. One pokeball later and Pidgeotto was mine!
After a trip back to the city to heal, I returned to the forest once more to grind by entire team some more, getting everyone to level 10. I then went back to Route 22 to face Gary in battle. The stupid idiot had only added a Spearow to his team and Pikachu made short work of that thing. He then sent in his Eevee so I sent in Mankey, who delivered a couple of Low Kicks to end the battle. Then I went back to Viridian Forest and took on all five trainers before finally making my way into Pewter City with my entire team at level 12. After exploring the city, including the science museum, I took on Brock's gym. Mankey was made to destroy heavy rock types and soon I have my hands on the Boulder Badge. Brock also gave me the TM for Bide, which I will not be using ever!