I've just noticed an email from the English department reqesting a game / program / resource be made for them, after seeing the 2 maths programs I've been working on.
After working on a basic premise, I'll re-work my old "Maths Invaders" game to become "Spelling Invaders". This learning game will be coded in Flash, but I'm not sure how long it will take.
It won't quite play like the classic Space Invaders, but kids of this day won't care, which is unfortunate.