Cerevrum looks like it could benefit from more of a description than I can give it here, but so far it looks like an interesting twist on a turret shooter. The twist is that in order to fire your guns at the baddies, you have to complete brain bending tasks. One task includes launching coloured balls out into space where they lose their colour and then mix themselves up and you have to remember which is which to fire your gun. Another has a number of little critters pop out of holes. Some are identical, some are not. It then shows you two of the holes and asks you if the two critters inside are the same or not. Sounds simple, but it can get tough as occasionally a new critter will pop out of a hole and you have to remember that that one hole is now different.
It seems the team behind Cerevrum is specially qualified to make a game like this with background in both neuroscience and gaming. It looks great too, so if you enjoy challenging your mind and you can afford it (it’s free, you can) then give the game a shot.