"Cornerstone: The Song of Tyrim." An open-world fantasy game with lots of physics puzzle solving and crafting. A young Viking sets out to find the missing men from his village. Not Rated. $20, downloadable for PC, Mac and Linux.

"Rocketbirds 2: Evolution" This sequel from the well-received studio behind "Rocketbirds: Revolution" and "Hardboiled Chicken" returns to the fowl world of budgie commandos who are taking on a penguin regime in this expanded action game. $20, cross-buy for PlayStation 4 and PlayStation Vita, Rated T for Teen.

Also out this week: "Pokémon Rumble World" (Nintendo 3DS), "Alienation" (PS4), "Severed" (PS Vita), "Stranger of Sword City" (PS Vita), "Hyperdevotion Noire: Goddess Black Heart" (PC), "Sega 3D Classics Collection" (3DS), "King's Quest Chapter 3" (PC, PS4, Xbox One, PS3, Xbox 360), "Tales from the Borderlands" (PS3, PS4, Xbox One, Xbox 360, PC), "Battle World: Kronos" (PS4, Xbox One, PC), "Kings and Heroes" (PC), "Falling Stars: War of Empires" (PC), "Fragmented" (PC), "Otem's Defiance" (PC), "Corpse Party" (PC), "Pico Park" (PC), "Emerge: Cities of the Apocalypse" (PC), "Lost Reavers" (Nintendo Wii U), "Neon Chrome" (PC), "Avalon Lords: Dawn Rises" (PC), "Portal Stories: VR" (PC), "Ozmafia!!" (PC), "JumpJet Rex" (Xbox One), "The Walking Dead: Michonne Episode 3" (PC, PS3, PS4, Xbox 360, Xbox One).