old stuff.
Day Of The Tentacle
Sam + Max
Monkey Island (all of them)
Broken sword (all of them)
Newer stuff:
Splinter cell (all but the last one, new ones suposed to be good)
Call of duty, modern warfare and medal of honour .
Assins Creed 2
Knightlore
have a look here, a whole load of old spectrum games to play
http://www.zxspectrum.net/
OMG, Ultimate Play The Game rocked! They were gods to kids my age and Knightlore was simply the most revolutionary game ever in its day (and some would say still is.)
Other contributors to my misspent childhood included the Zork trilogy, Elite, Falcon and Apache Longbow.
have a look here, a whole load of old spectrum games to play
http://www.zxspectrum.net/