SubTerrania (USA) ROM

Aliens have attacked a mining colony and you are assigned to stop them. Beware we could only provide you with an experimental craft. Lets hope it works.
That is the jist of the story. Fortunately, the gameplay is phenomenal. You must shoot your way through ten levels while solving puzzle to open new paths. But beware, you only have a limited amount of fuel. But fear not, you are given all you need to complete your objectives. From heavier firepower to extra energy for your shields. Its up to you to end this takeover.
I should warn you. This game is considered the hardest game on the Genesis/Megadrive. If you make it to the end, you are worthy of joining the pantheon of gamers.