What’s even stranger is that after defeating a trainer and seeing “Red received $200 for winning!”, the battle commands would appear again. If you selected “Run”, the battle would end as it normally does. You could also select Curse. If you did, upon returning to the overworld, the trainer’s sprite would be gone. After leaving and reentering the area, the spot [where] the trainer had been would be replaced with a tombstone like the ones at Lavender Tower.
The move “Curse” was not usable in all instances. It would fail against Ghost Pokémon. It would also fail if it was used against trainers that you would have to face again, such as your Rival or Giovanni. It was usable in your final battle against them, however.
I figured this was the gimmick of the game, allowing you to use the previously uncapturable Ghosts. And because Curse made the game so easy, I essentially used it throughout the whole adventure.
The game changed quite a bit after defeating the Elite Four. After viewing the Hall of Fame, which consisted of Ghost and a couple of Pokemon I used for HM`s, the screen cut to black. A box appeared with the words “Many years later…” It then cut to Lavender Tower. An old man was standing, looking at tombstones. You then realized this man was your character.
The man moved at only half of your normal walking speed. You no longer had any Pokémon with you, not even Ghost, who up to this point had been impossible to remove from your party through depositing in the PC. The overworld was entirely empty – there were no people at all. There were still the tombstones of the trainers that you used Curse on, however.
You could go pretty much anywhere in the overworld at this point, though your movement was limited by the fact that you had no Pokémon to use HMs. And regardless of where you went, the music of Lavender Town continued on an infinite loop. After wandering for a while, I found that if you go through Diglett’s Cave, one of the cuttable bushes that normally blocks the path on the other side is no longer there, allowing you to advance and return to Pallet Town.
Upon entering your house and going to the exact tile where you start the game, the screen would cut to black.
Then a sprite of a Caterpie appeared. It was the replaced by a Weedle, and then a Pidgey. I soon realized, as the Pokémon progressed from Rattata to Blastoise, that these were all of the Pokémon that I had used Curse on.
After the end of my Rival’s team, a Youngster appeared, and then a Bug Catcher. These were the trainers I had Cursed.
Throughout the sequence, the Lavender Town music was playing, but it was slowly decreasing in pitch. By the time your Rival appeared on screen, it was little more than a demonic rumble.