Sonic Heroes, Sonic Generations, osu!

First one gives me an extreme vibe, playing on 1440x900 with great OST's. Casino level was something, that I will never forget.
Second one is the first thing I had on my first Steam account. I don't have much explanation on this one, it was just really cool.
Third one is my best find of 2020, actually. No much on this one too, cool, just cool.