Stadium Series
The final entry in the short-lived but memorable Pokemon Stadium series.
Battle Now
Want to get your mind off choosing teams? Why not 'Battle Now'? You and an opponent are randomly given a team of 6 Pokemon, from which you must select 3 to fight. You can fight against a friend or against the computer in the easy/normal/hard levels. Fighting with a random team against a random team is actually a lot of fun in that it forces you out of using your favorites or Pokemon you're accustomed to.
Pokemon Lab
You need to have a Transfer Pak inserted in order to make use of this.
This is sort of like an advanced box organization for Gen 1 and Gen 2 games. It's much more comfortable than sorting your boxes on the Gameboy where you have to save to even look between different boxes.
This also has an incredible feature: the 'N64 boxes' which allow you to store Pokemon.
Dead Internal Battery
If your cart is one of many that has a dead internal battery, you cannot use the home or Pokemon lab features. Not even to see what Pokemon you have in the boxes. You can play it on the Gameboy, but you will run into an error when you try to save. As such, there really isn't any point in trying to play with a cart that has a dead internal battery.