Your first computer game in childhood?

The first legit game I played was Quake 3: Arena. My dad downloaded a pirated version for himself, and I just found and would never stop playing it on our old Pentium 4 PC, and he got really pissed at me for playing Quake at the age of 5, so anytime he left the house I would just flail around private servers aimlessly and shoot at anything that moved. Good times.