Original Source: PokeCommunity Ash Gray Official Thread
This is the latest Beta 4.5.3 currently
Pokemon Ash Gray is a story hack that recounts the adventures of Ash Ketchum of Pallet Town in his very first journey through the Kanto region and beyond.
Description by previous author, Luffy
You play as the main character of the game and your name is Ash Ketchum. You are going to have an amazing adventure around your Pokemon World tomorrow. You will have to pass 116 Events and 2 Movie events to complete in this trip. On the way, you will meet a lot of Pokemon, rivals and trainers that will help you so much which also include misty 🙂 . You also will be required to catch Pokemon which Ash catches and make the decisions he makes like in the episodes.
Now Pokemon Ash Gray is hacked up to episode 50 now and it is still in the process of completing fully based on all its new episodes. New versions are coming soon with bugs fixed and special updates along with it. By my point of view i think it is the best Pokemon hack game you should enjoy.