Whoa, I had to think about this one for a while.... I think it was Hyper Sports 1 
Hello.
I remember the day my father came home with that strange computer and two games, in cassette. He placed the computer in the kitchen table with a tv and then we played the two games for a big part of that night. The games where PITFALL 2 and RIVER RAID (I think this is the origin of my obsession for getting these games in cartridge). After a week, my father came with a third one: JET SET WILLY 2.
Time after time games were coming home: GUN FRIGHT, H.E.R.O., ... and one day my first cartridge: NEMESIS! "Uauh!". The second one was METAL GEAL, "Uauh! Uauh! Uauh!", the best game ever IMHO for any computer/console -I have paid more than three times what I paid for that METAL GEAR at that time for the japanese version these days ...
My first MSX2 game: RED LIGHTS OF AMSTERDAM.
It's interesting, most of the times I can't recall what happened to me in school, high school, university, ... but I can recall my MSX mementos perfectly. I ... think ... I'm ... going ... to ... 
Regards (I DO LOVE MY MSX).
Hmmm... first game? I think it was Yabyum 
Just kiddin'
Can't remember exactly... Think it was Yie Ar Kung-Fu 1 or Monkey Academy.
