If your games stop saving, the only thing you can do is buy a new battery and replace the one inside the game cartridge. You can buy the replacement battery anywhere that sells a CR2025 battery or something similar. There's also some guides on the internet that show how to replace the battery. There is a chance of ruining the game if you're not careful, so do this at your own risk or ask something who good at doing things like this to replace it for you.
You can't get Dark Lugia in Pokemon Silver, Gold, or Crystal. You can get Dark Lugia in Pokemon XD though. For Pokemon Silver, Gold, and Crystal it is just the regular Lugia.
By trading one from gold/silver and cloning it Dani (the girl Pokemon trainer on Pokemon crystal version) By trading one from gold/silver and cloning it Dani (the girl Pokemon trainer on Pokemon crystal version)
Pokemon Crystal.
Same as the gold and silver 251
Rhydon cannot evolve in Pokemon Silver/Gold/Crystal.
cuz they think Pokemon silver and gold are better than Pokemon crystal.
Gold / Silver / Crystal
You can't get Dark Lugia in Pokemon Silver, Gold, or Crystal. You can get Dark Lugia in Pokemon XD though. For Pokemon Silver, Gold, and Crystal it is just the regular Lugia.
By trading one from gold/silver and cloning it Dani (the girl Pokemon trainer on Pokemon crystal version) By trading one from gold/silver and cloning it Dani (the girl Pokemon trainer on Pokemon crystal version)
Pokemon Crystal.
Same as the gold and silver 251
heart gold, soul silver, silver, crystal and gold
Rhydon cannot evolve in Pokemon Silver/Gold/Crystal.
HeartGold and SoulSilver are the remakes of Gold, Silver and Crystal.
Silver is the rival in the games Gold, Silver, Crystal, HeartGold and SoulSilver.
In Pokemon Gold/Silver/Crystal/Heart Gold/ Soul Silver you can have it as a starter but otherwise the only way to get it is from trading.
You can get Chikorita in Pokemon Gold, Silver, Crystal, and Emerald.