Xead is a simple and addictive strategy game that anyone can enjoy. Simply stack the little square aliens as high as you can. For each alien that you stack, you will earn a point. Be careful though, because every once in a while you will come across triangular and circular boxes that will increase the difficulty. Each of these are also worth a point each.
There is no end to how high you can build. Just keep your tower standing, because a single alien or box falling astray will be the end.