So I actually recently thought of a game that I discovered ages ago..called Robot Unicorn Attack ! I tried it again and thought it was awesome because of two things: First, The background music "Always" by Erasure just fits perfectly without the overall game theme. Second, it was incredibly simple to play and enjoyable. I think the game was made as a joke, but it definitely has some value.
What other old games have you played that you think is worth trying and why?