Here’s a list of items that only street forces of certain levels / mercenaries drop:
| Street Force Level / Mercenary | Special Rewards |
| Street Force Level 1 to 3 | 1 hour VIP |
| Street Force Level 4 to 6 | Cargo Production Boost |
| Street Force Level 7 to 9 | Cash Production Boost |
| Street Force Level 10 to 12 | Red Wine |
| Street Force Level 13 to 15 | Bond |
| Street Force Level 16 to 18 | 8 hr Gathering Speed Bonus |
| Street Force Level 19 to 23 | 25% Crime Ops Acceleration |
| Street Force Level 24 to 26 | 300 VIP Points |
| Street Force Level 27 to 35 | 1,000 VIP Points |
| Shredder | Topaz |
| Ghost | Morganite |
| White Shark | Silver Ingot |
| Venom | Black Jade |
| Reaper | (Non-Battle) Emblems |
Are the probabilities to drop Topaz extremely low? I hit.a dozen lvl1 shredder..but no special gems. Wonder if I need to move up to lvl2/3.. Thank you
Yes. They’re extremely low. Probably one in 20 or so.