India, April 17 -- Steam has given users the 2018 indie game AtmaSphere for free download and to keep. But there's a catch: this is only until April 23, when it goes back to paid. AtmaSphere, a minimalist puzzle-platformer from Mazen Games published by GrabTheGames, is about rolling a ball-Ballard-through medieval levels with all sorts of hazards (traps that kill you, flimsy wooden walkways, and diamonds to collect).

Your goal is to impress Ballerina and get Ballard to his own home. No swords, no dragons, just gravity, momentum, and precision.

PC players can download and play the game with no issues, but Steam Deck users are in the dark. Valve has marked the game as "Unknown," which means the game may work perfectly or not at all on Ste...