If you use assets from others make sure u credit them in your work the game can be a project you have been working on try to implement controller support if possible. Create a at least one waifu character can be the boss or the playable character at least have one anime character in your game

You can create a fan game of Metroid or castle Vania or just put your own spin on the Metroid Vania genre but, include at least one anime character

The Artist on the cover image is buy someone called chickenwithtie on danbooru