The game runs at a perceived 20 FPS with relatively choppy controls. I don't blame DosBox, I think this is how the game was made. There is only PC speaker sound. The usual 2019 gamer will probably turn it off because of agony. There is no music in the game. The levels in the game are of strongly varying quality and difficulty. There are levels where you HAVE to fail because you can not know what's coming (ex: laser barriers when falling). Some levels contain a lot of backtracking. Sometimes levels have parts that are difficult just because of the controls (which means difficult for the wrong reason). An example are those water/acid pits with a low ceiling above them. From my point of view the first levels were rather difficult. Later levels sometimes are easier. The best example for this was episode 3: The levels in the middle of the island were really difficult, while the last four levels (including the final castle!) were a lot easier. Level length also varies strongly. Some levels are very long with a lot of backtracking which then also have a difficult spot right at the end. All this is made worse by the fact that there are no checkpoints in the levels. You can only save between levels. For reference: I first played this game when I was a lot younger and I also played Commander Keen. What you get with this game is a nice simple platformer with levels of varying quality. If you can live with the fact that on some levels the developers obviously didn't care about the player then I think you can have some fun with this game. My final time was a bit above 5 hours for all episodes.
