I see your 5 games in your original post and raise you 5 more Retro games.
1. Pokémon Fire Red for the Gba
2. PGA Tour Golf for the Genesis
3. Aqua Aqua for the PS2
4. Combat for the 2600
5. And a half eaten Bagel for my Stomach.
Ooo, I have a couple of these! Anybody who's got a 2600 has Combat, and I got Pokémon Fire Red in the SP from the lost & found at work years ago (for the record, it was there for over a week before I snuck it out, in a couple more days it would have been thrown in the trash, and I asked my co-workers to inform me immediately if anybody asked for it.)
I had no idea was Aqua Aqua was, so I googled it- I haven't thought about Wetrix in years. I should look up more about it... and maybe get a bagel...