Catch Them Sweetie

Yes. Catch Them Sweetie is free to play on Steam, so there is nothing to buy to start playing.

The minimum requirements for Catch Them Sweetie are: Windows 10, GeForce GTX 960, Intel Core i3, 4 GB RAM, 500 MB storage. It runs on Windows only. The recommended specs are in the System requirements section.

No. Catch Them Sweetie is a single-player game.

Mostly, yes. Valve rates Catch Them Sweetie as Playable on the Steam Deck: it runs, but may need some manual setup.

Yes. Catch Them Sweetie is the full base game. You need nothing else to play it.