- Infinate runners
- Tower defence
- Breakout
- Artillery strategy (Worms etc)
These are so easy that I doubt that anyone would buy a game making system made specifically for these types of games.
what about a classic point and click adventure maker (Monkey Island etc)
There is already tons of p&c adventure makers, namely AGS, Wintermute... and AFAIK they are very good. I see no point in creating another one. A better thing would be to contribute to one of them (which I already did a bit with Wintermute 2).
a first person dungeon explorer RPG maker (Eye of the Beholder etc)?
They are so very niche that I doubt anyone would buy it. Apart from Grimrock, a dead genre.
Or a first person adventure game
You mean like Dear Esther, Amnesia/Penumbra, Portal etc? You can just create a few levels for UDK or something. No need to program anything already.
That might slightly possible, limited, but a fun experiment to do with procedural generation. Genre have definite structure, so has human, okay themes would be hard to pull. Clunky game generator for the wins?
Yeah, it is probably possible in some way but not for 1 person.