Originally Posted by
Brofl
Replay value for me is usually found in games that are action oriented. Take Star Fox for example, it's quite fast paced, it's a rail shooter, it's old, but god dammit is it still fun. There's different ways to progress through the game and the time it takes to defeat enemies correlates to your skill level.
Or FPS games like Metal Arms and Halo which are meant to be played gung-ho guns blazing, you can play in a very stealthy manner which I prefer to do. Or introduce a handicap that restricts you from using certain weapons.
And ofc there's the RPG titles, for example Fable, which I initally played through as a melee fighter with melee enhancing spells, however I later found out that going anything but melee just sucks.
And action adventure games where you can handicap yourself can be fun. Take for example the Zelda series. I make it a rule of thumb to do the three heart challenge in every title, and if it's still not challenging I'll play without a shield, not pick up any hidden skills, and find other ways to gimp myself.
The biggest thing with replay value for any single player game is if you can complete a game using multiple styles and there's multiple routes and you're not restricted to playing one set style because each subsequent fights call for it.