As far as I can tell we're unique. The games were made to be used as a language aid. Also, games like the labyrinth and forelnaar aren't easy to make. 

Of course not. I´m developing games myself through GM pro, and have lots of experience with coding.

An example here:

To get a player to move to the right, and have an animation to it as well, i will have to type this:

if keyboard_check(vk_right) {

x+=3

sprite_indeex(spr_player_move_right)

}

of course this is a simple code compared to others. :)

But labyrinthian is much harder to develop than forelnaar. Forelnaar is only using global settings, and shifts in rooms. Labyrinthian ... i don´t even want to get into that ;)