Sorry, I would have gotten it right away from the second image, if only I had looked...

But here is the next one.

It's The Legend of Tianding?

You recognised it immediately? Yes, it is.

I shall have to make the more difficult,

here, an easy one

Yea definitely very easy lol
Super Robot Wars 30

you're right, your turn now

Alright, here it is! (Don't look at the obvious :P )

Heck! Definetely looks like Portal. Portal 2 to be more specific.

But if it's not Portal, wild guess, is it Black Mesa?

Not sure if the cake is really a lie...

It's the opening scene of Portal, just a bit off if you remember the scene correctly
The game isn't even made or published by Valve, but kinda related in a way? Still not part of the Valve universe in any way tho

It's been probably over 10 years since I've play both Portals (unpopular opimion, first is the better one) and my last breakfast is already a bit fuzzy...

There's Bridge Constructor Portal but I don't think is it but since I'm out of ideas, is it?

Stanley Parable?

Is this Portal Stories: Mel?


I'm assuming that you're being sneaky and that it's not Portal 2 but still Portal 2 that it's a Portal 2 mod well known enough to have a wikipedia entry.
https://en.wikipedia.org/wiki/Portal_Stories:_Mel

Portal Stories: Mel doesn't have that aesthetic. Great game though, I thought it was in many ways better than Portal 2.

is Thinking with Time Machine?

Yes you're right! You're turn now
Ngl the second image I was abt to post was another game reference in the same ending route which is even more random & seemingly unrelated to the Stanley Parable from the surface lol, but oh well