Speaking of Ghosts n' Goblins - there was a discussion on HN not too long ago about platformer controls in old video games (air control vs. non–air control), and how being able to control your character in the air mostly won out.

As someone who grew up playing the excruciatingly difficult NES version of Ghouls ’n Ghosts, can't say I'm sorry to see that mechanic go the way of the Atari Jaguar.

The PSP version of this game was a lot of fun, if frustrating in how the "random spawn" of enemies really cut against some of the difficulty. In particular, it would really suck to have a random spawn come in where your jump was taking you.