Mossy Pixels

Yes. Mossy Pixels is free to play on Steam, so there is nothing to buy to start playing.

The minimum requirements for Mossy Pixels are: Windows 10, Intel UHD Graphics, Intel Core i3-1005G1, 3.9 GB RAM, 200 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.

No. Mossy Pixels is a single-player game.

Yes. Valve rates Mossy Pixels as Verified on the Steam Deck: it runs well out of the box.

Yes. Mossy Pixels is the full base game. You need nothing else to play it.