My first fan games i made are from the 90's.
I don't remember the names of those games, but i have the games.
In one game, there's a member of Lemmings. (That Lemming is not an exact copy from Lemmings.)
That's what i know.
I'm not talented enough or bored enough to; so, no.
I did a fairly bad sonic game (thgough I'm still quite proud of the engine, just not the level design) using DIV a few years back.
I mean to try a 3D one in Saurbraeten one of these years.
Attempted a few times, yes. Still do, actually. They don't usually get much further than engine tests, but considering that these engine tests get better and better each time I attempt it, no problems there.
The Castlevania fandom has made some amazing Konami-level fan games. You should check out some my pals over at the Castlevania Dungeon Forums have done. I started to use Game maker but my head soon exploded from aggravation...
Head exploding never helps the development process.