MaGo72: My Dad plays the hell out of the
Luxor series,
Zuma
and a Skat game
which I bought for him as a gift for his birthday.
Sadly those games are not available on GOG.
I'll have a look at them.
blarth: Hexcells plus is a logic game with very simple controls.
I have an extra steam key for this if you want it.
If your grandpa doesn't use steam, buying it from the authors webpage will give you a drm-free version from humble.com.
http://www.matthewbrowngames.com/hexcellsplus.html It looks really interesting and I'll have a closer look soon. Thanks for your offer. :)
chadjenofsky: Who knows? He might actually enjoy them. Myst was my first Point-and-click adventure and completely loved it. I was also going to suggest the hidden objects games that Snowkatt did. My mom does pogo.com for her game fix. That's got a lot of board games and hidden object games, and of course different solitaire games too.
Indeed, who knows? I just don't want to overwhelm him. :)