R_Leo_1

Both good choices!  For me it's Dark Cavern.   Seems like every time I fire up the Atari,  even if I play something else too, I end up back at Dark Cavern.  Other games that have been like this in the past for me include Midnight Magic, Pitfall! and Yars' Revenge.

My favorite's probably Demon Attack or Berzerk.

@AAA177 I really enjoyed the arcade original, and this one captures the spirit extremely well for a 2600 port, it also has excellent sound design carried over from the arcade, and it helps in making it so addicting. Also it's just nice to have a 2600 game with more than a few screens lol.