Invasion of Alien X: Earth in Crisis

Invasion of Alien X – Earth in Crisis is just OK. It's very simple and plays fine, but without any kind of incentives, there's no real reason to play this for more than an hour or two.

I'm always down for something a little weird with arcade sensibilities so from that angle Invasion isn't bad, but it also doesn't take long for the repetition and mild indifference to set in...