What is the connection to chess beside the background and the enemys appearance? :D Game is nice, but I think for the educational part the player needs more feedback if he chose the correct answer. You can't tell, if the spaceship disappeared because the statement was correct, or just because you hittet it long enough. Also it is hard to read the texts and escape the space ships at the same time. If could be improved by pausing the game for 5 secs to let the player read the statements and then only the correct answer color is dangerous, the others won't harm. Maybe somehow this way :)