 Unity was also the best option when choosing engines because it cost $5,000 for licensing, as opposed to their previous choice which would have cost $100,000.If they were to upgrade the game using modern technology, they wanted to make sure the game would use continuous scrolling instead of fixed flip screens, it had to have realtime dynamic lighting and realtime 3D visuals instead of pre-rendered bitmaps, it had to fix things they felt were wrong with the original game, and it had to add elements that were included in "Stranger HD", such as difficulty levels, but maintain the original's difficulty and goriness.Oddworld Inhabitants and Just Add Water decided to use 3D technology while "staying true to that platforming nature on the controls level" and only if they could maintain the same experience players had with the original, to satisfy the fans of 2D games in a way that Lanning termed "neo-stalgia".