Legendary. A core memory is spending a ton of time in the community levels with my brother, playing around in maze levels, having light saber duels, and racing one another. The ending is ingenius, you don't even consider the reality of being able to shoot a portal on the moon even though they told you the panels were made of moon rocks though was seemingly just a gag. Wheatley is charming, the development of the relationship between GlaDOS and Chell felt so right, and the portals and what you can do with them was fleshed out though there is still so much that can be done and that's why I beg for a sequel to see this amazing idea explored once more.