The 3 stand-outs for me:

The Championship Manager/Football Manager series for addictiveness ("Just one more game, and then I'll eat something...").

Grand Prix 2, for being ground breaking at the time, and still extremely playable today. Although the keyboard configuration causes joint pain.

Rise of the Triad, for playability and depth: Around 60 pre-existing levels, + "Random" Level generator, + Level editor.

Honourable mentions are too many to count.

<div class='quotetop'>QUOTE(Moli @ Nov 21 2006, 10:54 AM) [snapback]267937[/snapback]</div>You've got to be kidding.

got harder and harder to decide after reading what you others has favo's.
but its gotta be:
X-com Acopalypse
Silent Hill - The Room
Half Life

oh, theres such more.. if i should be naming from amiga and nintendo also, i would have problems for sure..

I don't have most favourite games, but I think the best adventure games I've played were Secret of Monkey Island and Beneath a Steel Sky.
My favourite strategy game (serie) is Civilization and so far the best tactical game is Ufo - Enemy Unknown.
There are many more great games out and not all of them are old, but the ones I mentioned are probably those that will stay the favourites in their genres for me simply for being perfect games.

About Monkey Island having bad graphics, that game had awesome graphics when it came out, adventures generally were advanced at that since all backgrounds were static. There is also no problems with colors, you have to play that game to see it. The old games were made by real (pixel) artists, talented men and women that mostly got replaced by pixel shader programmers nowadays ;).

My top 3 would be:
Xcom Series.
Heroes of might & magic Series.
Quake Era (Quake, Quake2, Action Quake 2)



Others worth mentioning:
Master of Magic
Might & Magic series(especially 6 and 7)
Civilization series/Colonization.
Total Annihilation
Dungeon Keeper 1+2
Settlers games. (I remember i got a german version of settlers 1 back then named "Die Siedler" even know i werent able to understand the language.)
Master of Orion 1 +2

I have probally forgot some games.

one of the best games ever is Wolf - return to the castle of wolfenstein. specialy in multiplayer! the numbers of comands and other stuff you can say is extreme!!!!
all meyers games are fun..... pirates, Civ and the pearl colonization....
a great game im playing now is desgaea on ps2.....

best dos games is
1. MoM
2. realms of arcaia - shadow over riva
3. stratego or some other game... hehe

Jagged Alliance 2
Colonization
Patrician (Patrizier) 2

Just the other day, i bought HALO 2 for my xbox. and without a shadow of a doubt has to be one of the best, if not the best FPS "first person shooters" of all time. its well worth a mention, not only that but i bought in Game for a fiver. if you already have it or are going to get it, then i challenge you to start the Game with the Difficulty set to "Legendery", and see how long it takes you to do the first level. it took me, and this is no joke, just 3 Days to compleat the first level, on the hardest setting. it makes the game so much better. so if you like a challenge like me, you will love it!

It's almost imposible for me to compare strategy games with adventure games and say: wooho these are my top 3. There are just too many games. So I'll order them by genre.

Strategy
All Sid
Black and White 1/2
X-Com 1

Shooters:
Deus Ex (best game ever)
Max Payne 1/2
Half Life 1

Adventure:
Star Control 2
The Longest Journey
Death Gate

And that's about it.

Oblivion
Civ IV
Machiavelli the Prince