World Tier 1 to 4 differences in Diablo 4 Season 6.

World Tier Comparison
| Aspect | T1 | T2 | T3 | T4 |
|---|---|---|---|---|
| Monster HP | 1x | 2x | 4x | 8x |
| Monster Damage | 1x | 2x | 4x | 8x |
| Loot Quality | Sacred | Sacred | Ancestral | Ancestral+ |
| XP Bonus | +0% | +50% | +100% | +150% |
| Cinder Rate | None | None | 1x | 2x |
Best Tier
T4 (Tormented) for all content once geared. T3 is the farming sweet spot.