Don't agree Husk, it's maybe easy to make, but it's a common trend in Indie: make old-school games.
Partly because the creators wanna make a game like that, but also cause people wanna buy that shit.
Even I bought one the other day when it was really cheap, even though I never played oldschool p&c.
I like games like that. I have a PS3, but 90% of the titles available are the same type of 3D action-shooter-RPG kind of shit. I prefer simple addictive games over needlessly complicated superdoopagraphics 1.000.0000$ budget kinda games. That or sandbox games that let you manipulate/mod/create.