We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch
Gonna list a few games I consider one of the best or fun games ever created:
Total AnnihilationThe mother of all RTS. The engine, UI and unit autonomy favor massive battles over micromanagement and action over strategy. Nice prentation. Unique.
Warzone 2100While offering a sub-par story and enemy AI the game shines thanks to its engine, removal of tedious base management (more focus on strategy and action) and ability to customize your units.
DuneCombines RPG with RTS. Immersive story. Beautiful graphics. Simple yet fun strategy part. The more you RPG the easier the RTS part becomes. Different ways to win.
UFO - Enemy UnknownBase management (including hunting UFOs and alien bases over earth) and turn based combat mixture. There's like 10 games in the series (if you include non-offical clones). I recommend the first (this one) and the 3rd (
X-Com Apocalypse).
If you liked them you might also like these clones:
http://en.wikipedia.org/wiki/UFO:_Aftermathhttp://en.wikipedia.org/wiki/UFO:_Aftershockhttp://en.wikipedia.org/wiki/UFO:_AfterlightNot sure how bad you computer actually is, but if you can,
TES III: Morrowind is a must play if you like RPGs. Huge world to explore, unique (at that time) leveling system and great item customization makes playing it a fun adventure you'll enjoy for its own sake. Hint: Become a vampire.
FalloutNon-linear RPG with turn based combat. Fun, smart, excellent story and setting, and lots of stuff to explore.
Fallout 2 while still being 2D / turn-based ist just as good.
Fallout 3 and
Fallout 4 are 3D / 1st person and thus play entirely differently but stay true to the spirit to their predecessors but may not run on your computer.
TIE-FighterStar Wars space combat simulator. If that interests you, play it, if not, skip it. That simple.
If you're still reading you might also want to try its predecessor
X-Wing and/or the descendant
X-Wing Alliance.
If you're
still reading you could as well play the best space combat simulator (non-starwars) ever created:
Wing Commander Prophecy. Dark story, action-packed gameplay and phenomenal movie sequences make this a truly fun and immersive space shooter.
Honorable mentions:WarCraft (series) -duh
Deus Ex (series)
Jagged Alliance
Star Wars: Empire at War
Knights of the Old Republic
Aquanox
Counterstrike (online)
or it's single player base game: Half Life
GTA: Vice City
Settlers (series)
Battle Chess