Sure there are plenty of ”doom clones” out on the PC (and probably some other platforms too), but I havent seen any of them on the playdate. I’ve also not seen any 1-bit FPS games out in general. Id be more than happy to hear to any ideas of improvement that you have, Im still doing a bit of work on this one when I can I find the time for it.
As for the price, well that is always very subjective. This game has quite a long playthrough time with varied content through out the maps. It also supports customization for anyone to create their own maps, textures and even enemies. I think the price point is fair especially if you compare it to what else is out there on the playdate.