Top three higher rated games you will never finish

[canch]

1. Half-life 1 (got to Xen and never finish the game) this was like 10 years ago

2. Wipeout HD (PS3), the game just gets harder and harder

3. Gears of War (PC), I keep getting to Act 3,4,5 and then I format my computer, losing my saves.  One day