I like playing old flash games... real nostalgic :) hers a list of my favs:

1. Urbex
2. Cargo Bridge 2
3. Tombscape 1 +2
4. Ghostscape 1 + 2
5. Stickmen Badminton 2
6. Balls in Space
7. Stick Run
8. Red Ball 1-4
9. Vex 1-3
10. Freeway Fury 1 + 2
11. Apple Shooter
12. Squareman 2

I downloaded Newgrounds Flash Player... worth it