New games for Astra machine?

Hi all,

Is it possible to add new games to my Astra B3? It's an Astra Pc model not Firefox. (Reel king, king crazy, originally Jack and the giant jackpot).

There's 4 games installed and playable, loads more in the config menu but they're locked and not playable.

I've got Reel King Potty, Rainbow King Potty, 4 King Cash and Party Games Slotto.

Never owned a machine before and had no luck with my last post so hoping someone can advise on this.

Thanks.