These games are rated 1-10 - 10 being worst on the list and 1 beign best
10. Halo
9. Half-life
8. HoverTank 3D
7. Wolfenstein 3D
6. HeXen II
5. Doom 3
4. HeXen
3. Doom 2
2. Heretic
1. Ultimate Doom
Conclusion: Buy Doom!