Wow... depends on how far back I go.
Space Invaders on the Commodore PET. That was just fun...
It worked on the Commodore 64, too [img]smile.gif[/img] And my buddy had Strip Poker for it as well [img]tongue.gif[/img]
Might & Magic I on the Apple ][e was my first real CRPG, and remains special for that reason. Lost many hours, there, I did...
Bard's Tale III on the 64... a lot more time was spent.
On the PC, all the MM series and a few others.
In the arcades... Double Dragon chewed up a lot of my quarters in college. Then they kept bumping up the difficulty level 'cause we were too good
And Galaga remains one of my all-time favorites, too.
Almost forgot... Yar's Revenge on Coleco was another favorite way to kill hours of time...