My job involves earning money on the internet. Very often I have to register additional accounts in emails or social networks. Of course, I tried to find a service where it would be profitable to order temporary virtual numbers. I can recommend it to you. Here you can buy an inexpensive online SMS number https://sms-man.com/
I play all kinds of games, including browser games. Yes, you're right, flash games don't burden your computer's operating system. Moreover, you can even play with a smartphone or tablet, which is very convenient. The one I like the most is a selection called Snake Games. Here at the link you can find different variants of such games and immediately play, without downloading and installing.