Pokemon and the Final Fantasy games but there are honestly so many amazing GBA games over the years.
Final Fantasy had the stand out Tactics game that for me was amazing, I love playing it even to this day and can still put hours into it, Also had Dawn of souls and FF4 Advanced both amazing games that I completed several times.
Now to pokemon, with Ruby being my favourite ever game I put so many hours into this game I cleared 999 hours within the first year of it being out haha, the games for me had some great pokemon on it and was the only time till recently I ever wanted to complete the pokedex just to have it completed and not to get a special reward such as the shiny charm.
Final Fantasy had the stand out Tactics game that for me was amazing, I love playing it even to this day and can still put hours into it, Also had Dawn of souls and FF4 Advanced both amazing games that I completed several times.
Now to pokemon, with Ruby being my favourite ever game I put so many hours into this game I cleared 999 hours within the first year of it being out haha, the games for me had some great pokemon on it and was the only time till recently I ever wanted to complete the pokedex just to have it completed and not to get a special reward such as the shiny charm.