Time travel (not really), doppelgangers and scary worm-shadow monsters dominate this edition of Weekend Download. We promise they won't band together and sit beside your bed at night.Don't turn the lights on, just in case.

Alter Ego: DreamWalker (Windows/Linux, Android, free) - A nice little puzzle platform game that glows like neon in the dark! Created by RetroSouls, Alter Ego puts you in control of a character and his mirror, the latter of which is impervious to death-bringing things like enemies. Your job is to collect all of the hopping pixels and make it to the exit, and the only way to do this is by swapping places with your shadow buddy with the pressing of a button. Simple idea, but it's executed quite well and has a great cheery vibe to it! Also available for Windows Phone, though that version isn't free.

Time Stone (Windows, free) - Who doesn't like a little free adventure? Time Stone is a short point and click comedy game that puts you in the robes of Elle, a wizard's apprentice who gets trapped in a room by an evil warlock. Puzzle your way out of the place by following the highly logical solution sequences, all while wondering what sort of weird kinky stuff that warlock is secretly into. Great for some laughs, and quite well-made to boot. Mild content warning, so keep the kids out of the room just to be on the safe side.

Metrojdvania (Windows, free) - Created in 72 hours for a game jam, Metrojdvania shoves you in a dark house with a big scary monster chasing you from below. Your only option is to climb higher and higher, leaping from platforms and opening doors as quickly as you can. It has a fantastic sense of urgency to it, but don't be surprised if it's more offputting than any low-res game has a right to be.