Two new games are available for free this week on the Epic Games store: the wacky zombie construction game Bridge Constructor: The Walking Dead and the Victorian science fiction-inspired turn-based tactical match-three game Ironcast. The two games are "Bridge Constructor: The Walking Dead", a zombie construction game, and "Ironcast", a turn-based tactical match-three game inspired by Victorian sci-fi.

We called Bridge Constructor: The Walking Dead "the weirdest crossover of the year" when it launched in 2020. The game is physics-based bridge-building, but instead of anonymous avatars, you'll play as Daryl, Michonne, Eugene, and other "Walking Dead" characters as they build bridges and other structures in the ruins of America while running from the zombie hordes. As ridiculous as it sounds, I can think of worse reasons to build bridges. (It's a far cry from TWD's usual nonstop carnage.)

"Iron Cast" is an unusual mash-up in its own right: set in the 19th century, you pilot a steam-driven mech against enemies (many of them British Empire). The gameplay is reminiscent of "Puzzle Quest" (or "Brett Airborne," my personal favorite of the genre), but with the addition of light system management and 2D mech vs. mech pyrotechnics.

As always, Bridge Constructor: The Walking Dead and Ironcast are free for a week until July 15. After that, they will be replaced by the Myst-like adventure Obduction and the Martian merchant sim Offworld Trading Company.