Some games have secret endings that people don't uncover until days, weeks, or even months after they've come out. Spider: Rite of the Shrouded Moon is trying to one-up them all. You won't be able to beat it unless the real moon—yes, the one in the sky—is glowing just right.

And for really cheap, too! In celebration of Curiosity's landing on Mars, Tiger Style's super cool iOS game Waking Mars is on sale for $1.99 on the App Store. It's worth it.

Planting a garden is an exercise in resource management. What goes where? How much room will everything take? Which plant needs how much water? It's a constantly evolving puzzle that plays out over long periods of time. Speed things up a bit, and you're starting to have the makings of a really engaging game. Now put…