This game is pretty hard, but I was able to beat it all in one sitting once. It was really fun. There was a good challenge the whole way through. I liked the strategic choices you had to make in the overworld on what levels to play and risking having to fight an enemy and losing a life. The auto-scrolling levels were annoying. Eventually, after a lot of tries, I was able to beat the whole game in one sitting in 4 hours. It was really intense. Especially the last world. The auto-scrolling ships were super easy though, all of them. I looked up a speedrun a little while afterwards and learned that you can just double warp to the end really fast if you know what you're doing. I might play it again some day. Not having saving definitely made my experience worse because its such a big game. Still a good game without it.