If you had the N64 GBA adapter this game is 5/5, it was like taking your team to the higher leagues, to beat the Pokemon Stadium, there was a lot of mysticism around it at the time and it was glorious.

If you did't have the adapter it's a 3/5, you just picked the most op pokemons possible to beat it and that's it. Some of the minigames were also very fun, so there was that.