[alfl]

Fun question to reflect on answering! It's all about teamwork! I'm defining "impact" as user count:

About 8 years ago I built (as tech lead) a very simple commenting system that is seen by about a million people a day with several thousand DAUs.

I also made a triple-A cricket video game that was huge in India (batsman and umpire AI, some physics).

Made (as enterprise architect) a mobile banking app for a bank with several million customers.