I got my first A500 in February 1990, to replace my Speccy 128K.
The first thing I did was to play F18 Interceptor, before graduating to Batman the movie, Deluxe Paint and eventually using the 'say' tool in Workbench to swap insults with my mate Ben who kindly offered to help me with unpacking the machine!
However, within a few days the keyboad chip died on me and I had to get a replacement machine, which I still have to this very day.
How can I forget the hours I spent playing Xenon II, Shadow of the Beast, Speedball and Falcon? Oh, and being wowed by RSI's Megademo and spending hours doodling with DPaint 2........