Required a certain mastery in the Portal franchise. A difficult mod with a few rough edges in terms of execution and design. Overall a challenging mod that tests your wits. Crybabies can't win here.

Sequel of Portal. A more expanded view of the world of Aperture, with numerous gags of comedy between characters. Also playable with a friend in a unique co-op campaign.

The Cake is A Lie. A brilliant dystopian atmosphere, going through test upon test with only you and an AI. Challenges your puzzle thinking brain with out of the box features. Think With Portals.

The start of the inspirations. A must play. Though can be played on different versions of the same engine. It's old and rusty but it remains its charm untouched. Totally a must play.

A game that judges what kind of person you are based on your actions. Immersion is heavily required. The game however is far greater than what the community portrays it to be.

A game holding up for 15+ years. A game reaching its potential limit of the Source Engine as a whole. In fact, the best Class Based Shooter in the whole market with plenty of hats, memes, and gamble.

Best zombie shooter to start with and to master with. The horrifying apocalypse as a new player to a crazy wonder mod fest as a veteran in a video game is a bliss.

Sandbox game that can play almost every other game better. Have both cryptic and nice communities + community content. Can be used for making artworks and experimental modding.

Game defines fun to an extent. Progress is slightly tedious but overall, a great experience for both Offline and Online play. Enjoyable alone or with friends. Graphics are the least concern.

I want to like the game but it's an Online-Only game.