It absolutely can't be overstated how formative this game was to me as a kid. Bias aside, I can't think of many things it doesn't do well at. It's an experimental metroidvania, and while Dig 2 becomes a full-fledged one using the excellent foundations here, the core gameplay of Dig 1 is so solid that I almost prefer it at times. Only wish is that it was longer and maybe a little more replayable, but that's what Dig 2 is for. Get it now while it's on sale for a dirt cheap price :)