I have already posted a request for help for the Greek of the computer game here:
http://discourse.textkit.com/t/help-needed-for-ancient-greek-computer-game/14938/1
It is possible that the reason that I have only had one suggestion is that those on the forum best able to spot errors do not have the time to go through it (or for a host of other valid reasons). It is also possible that as the composition tends to be less frequented that they have missed it.
I like to think that a game like this does give a limited but worthwhile bit of practice to beginners with vocabulary and verb forms so might be worth a look.
(I guess there is a theoretical possibility that there are no errors but I take that seriously
)