Game mechanics...
It goes without saying that you probably won't have a chance to really understand what the goal of the game is unless you can read Portuguese...
As far as I can tell, the purpose of the game is to enter the keys in the proper sequence as indicated in the 'Display'. At the very least, this seems to increment your points by 10 each time you successfully do so.
If this is in fact how the game is meant to work, there is a serious lack of challenge, and of motivation here, as there is no particular penalty to incorrectly entering the sequence, except that you begin again from 'ASDF'. Successfully entering sequences consecutively doesn't seem to offer any bonus, or to increment your points by any more than the original 10. There doesn't seem to be any time limit for entering sequences either, not that a four-key sequence is very difficult to execute (on top of which, only the same four keys seem to be used in any given sequence). The player is also given an unusually long amount of time to try to build points in this manner.
Of course, this is written from the perspective of somebody trying to guess at the rules using only what's available on-screen, and having next to no understanding of the Portuguese language (except for a few Spanish similarities). If I'm way off-base as to the goal and the rules of this game, please disregard this review... but I can't bring myself to try this game again and find out if I'm wrong.