The game is hard, but the checkpoints are never more than a minute or two apart, and the lives' system/continue system has no penalties outside of locking you out of achievements on other systems. The creator, Locomalito, states that the soundtrack uses the true arcade sound of the YM2203 chip. This is an action platformer that emulates arcade games from the latter half of the 1980s, but it is probably most reminiscent of Super Ghouls 'n Ghosts. Cursed Castilla (Maldita Castilla EX) - 2D Action Platformer - ~4 Hour Completion Time - Trailer

The list will be in order of how I'd rank the games. There are many more, but I'd have to really comb through the games I've played to see all the ones I've missed. I'm going to list 11 PS4 single player games I find overlooked below. I think many indie games are overlooked because they don't have the marketing spend to really advertise, on top of maybe not having a marketing department in general, or anyone with experience in marketing. Copied and pasted comment of mine from a similar thread from a month ago:

Best free single player games on ps4