Indie Pass goes underground with Subway Invasion, pitting you against hordes of evil aliens

There's something inherently claustrophobic about being on the subway. It's all a bit drab, and there's hardly enough space to admire the tilework, especially when it's overrun with alien invaders who are actively trying to kill you. Subway Invasion, this week's featured Indie Pass addition, is all about surviving this unlikely, yet somewhat plausible scenario (if you've got a tin foil hat on).