A SunSoft game that is not very common, but still pretty cheap to get because it's not very popular.
One of the reasons why it might be overlooked is that it's classified as an action-rpg game, but I would say it is 95% action. The only RPG element is that you pick up weapons and upgrades. Use them by pressing Start and then Select to change weapon.
You progress through the stages and enter rooms where you can find these items. One of the rooms has a miniboss that you have to defeat in order to get through the exit. It is hard but not unfair. You continue by pressing Select+Start at the start screen. I won't call it a cheat because the game is unplayable without this. Maybe it is even mentioned in the manual (I don't have the manual though).
The game is entirely in English. Apart from the Select+Start trick, there isn't anything else that needs to be known. The last stage can also be a little tricky from what I read on Strategywiki, because you collect the Wing of Madoola item that allows you to fly by pressing down+jump.
When you continue you get to keep all the items you picked up, so you never have to visit a room twice for items. Still it is very difficult because of the myriad of enemies that appear. I really enjoy these kind of "enemy bombardment". :) See my previous reviews of games such as Ninja Crusaders and Demon Sword.
I read at Wikipedia (http://en.wikipedia.org/wiki/The_Wing_of_Madoola) that the game has 16 stages. I was stuck on stage 12 for over an hour (see some of my game play in the video below) and then I accidentally pressed Start without pressing Select and lost the chance to continue. Arino on Game Center CX did this mistake too on stage 12... But I understand him. Stage 12 is the most difficult stage, according to Strategywiki... After getting beaten so many times you start to go cross eyed.
The Game Center CX video recommends to go back to stage 10 where there is a spring to recover health, then play through stage 10 and 11 without taking too much damage, in order to get to stage 12 with more health...
While the game has this continue function, it doesn't have any password or save function, so it needs to be beaten in one sitting. As long as you remember to press Select+Start you can keep on replaying older stages too to get items on them you missed and then jump forward again.
I recommend exploring all areas to make sure you don't miss any items. Some stages are a bit like mazes and have a Metroid feeling to them but they are actually not that big. If you don't feel patient, you can of course look at the maps on the strategywiki article.
It is still a fun challenge and I hope to go back to it some day when I have more time. Arino on Game Center CX beat it, eventhough he had to replay from the start twice. He had of course full help of his staff that told him what to do and even replayed old stages for him, but the game is clearly beatable while providing a nice challenge.
We have this game for sale at our webshop: http://japanspelshop.se/index.php?route=product/product&product_id=2550