New, old, fast, slow, flow.
Every answer should hit all of those points. With only 5 games, you need to hit all the correct points. The games themselves almost don’t matter, but the style does. If you have a long player, you need a short player to counteract that. If you have a deep game, you need a kiddie pool to splash around in. If you have flow, you need stop and go.
Why? Moods. Some nights you want a quest. And others, you want a machine to slap you in the face with a wet hand to check if you have what it takes to keep up. Hit as many of these as you can, and you won’t be bored.