At Gamethon you will get free online games and to download them you need to visit https://www.gamethon.live/. You will get games like UNO, Pool, Ludo, and many more. You will be able to earn money by playing those games.
Personally, I prefer more lively games. For example, I often like to play online monopoly or some kind of conditional blackjack with my friends. It's much more interesting than playing against the computer.