i would make a never ending game there the best like stbf or other games like that except mine would be a zombie one like wave after wave come sortof like gta zombie version and no missions maybe a campaign thign but mainly nonstop zombies i love wwave after wave thing cause missions get borin to fast
I would make a tbs with plenty of rpg elements to it. It would have a massive selection of classes and races. There would be atleast 30 battles and atleast one boss for each battle. It would also have a story that makes sense. The ending would leave it open for a sequel.
I'd make some mmo shooting game(like combat arms) where you can choose what era you'd like to fight in. There would be things like air planes, tanks, artillery, anti-aircraft.