Because I'll never miss an opportunity to promote this... Tim Hunkin has an arcade in London called Novelty Automation which is legit one of the most under-rated things to do in the entire city:

https://www.novelty-automation.com/

It's tucked away down some side streets five minutes walk from Holborn tube station. It's best described as a collection of satirical arcade games, almost all of which were made by Tim.

There's a small hadron collider, and a money laundering crane game, an Amazon Warehouse job simulator and so much more.

It is utterly delightful. Everyone I have sent there has loved it. If you haven't experienced it yet you should fix that!