Impressive title was a game made by the same creator as FH, Kovu.
IT only featured lions, but had many more beautiful maps, a hunting system where you would get items as prizes, a of course, wings. IT was much further developed than FH is currently, but Kovu decided to scrap IT and make FH instead. FH has more flexibility than IT did, and will likely develop much further as time goes on.
Although Kovu is no longer updating IT, you can find different versions around the web. Impressive world and ITR are popular ones. The original one no longer exists.