In the 1980s we downloaded games from the radio

I definitely had cassette based games on the TRS-80, but most of the "wireless" transmission in my youth was via BASIC printed in the back of computer magazines. You had to type in the entire app yourself. I did this for basically every app they listed. Sometimes it was like tax prep software, but I didn't care, even though I was like 9 at the time. Yes, it took a very long time. Yes, you could easily introduce typos and bugs.

My older brother would type in games on the Atari 400 from magazines like Compute! The 400 had a brutal membrane keyboard, and we had no storage so you could then enjoy it until the device powered down and then that work was lost.

The computer was half a decade old at this point but we were poor so it was pretty great to us.

After he finished hours of typing in a game, he called my friend and I to see the magic of first run. My friend, having never seen the 400 before, pops open the cartridge cover to see what's in there, which is an action that powers off the computer.