Japanese Vocab Practice

I created a unity android game to help me learn new vocab. All the images in the game are hand made by me(and my computer) so theres only gonna be only a few more days then the current day at best The game is made to fit specifically my needs and so I didnt make much room for customization. My choice of words can also seem random and thats because it somewhat is... Although there is a preference to put words that I know their meanings but just not the kanji as late as possible, so one day itll change from like "curriculum" or some other "difficult word" to "blue" If no words appear: If you try...