Lego Island (more things to do, more storylines, more customization in building things, better controls)
Lego Creator (better camera controls, more bricks, better physics, better graphics, custom brick plugins/addons)
Turrican I/II/III (for PC without the need of a dos emulator)
Arkanoid/A: RoD (remake for PC)
Star Wars Battlefront I/II (more maps, classes, heroes, eras and gamemodes) (yes I know there's that one mod but it's for II and I don't have it for the pc :c )