Let's see...
Kid Chaos 2: More destruction, more sub-games as end-of-world bosses, more rabbits in jackets and blummin' huge mosquitos and less of the stupidly hard final quarter of the game.
Ruff 'n' Tumble 2: More of the same, yet more slick, and more exlosions, and more irony of the little kid with the big flame thrower (and more of the flame thrower weapon please- it was only used in world 1), and more boom!
Nigel Mansell's World Championship 2: Uncle Nigel teaches YOU (that's you!) to becoem the next F1 world champion. More of his frankly hilarious driving school antics ("Come on, speed up... Keep on the track... Try not to hit things..."). Proper old-school action.
T-Zero 2. C'mon, like I need to give details of this.
Superfrog 2
Monkey Island 2-2. Back to 2D, and back to the biggest laughs of the series.
Lemmings 2-2. Back to little creatures, with a huge number of skills, going around polar, sport, shadow, medieval levels...
Payback 2. Hey, maybe you could set this driving-shoot-'em-up-mission-based-gangster-game around an American city. during the early 1990s...somewhere around an earthquake fault...
Nah, scratch that last one. It'd never sell.