3 terminal apps that got me hooked:

mednafen (emulating a PS1 on a net potato with 2gb of ram and an atom processor at a playable framerate was just magic to me)

moc (epically minimal music player that just feels right)

nano (I wrote a series of short stories using it while listening to music on moc, honestly the most zen-like experience I’ve ever had)

Bonus: radion (an online radio player mostly written in bash I discovered in the early days of Lemmy)