The game is often cited as an example of one of the most difficult games of all time, due to its extremely hard level design and the fact that the player dies within two hits while the enemies can spawn unexpectedly all over the map. Moreover, the player must play through all of the levels again at a higher difficulty setting unlocked after completing the levels regularly in order to beat the game, without any way to save. Gamerant named it the 5th hardest video game of all time. In a 2011 review, Lucas Thomas of IGN opined that the game was so hard it would be a "waste of time" for most players, as they would not be able to justify the eight-dollar price tag the game had at the time.
