Total War Rome 2 Trainer 2.4 0 Build 19534 !free!

WeMod: Currently the most user-friendly option. It automatically detects the game version. If you have Build 19534, WeMod will almost certainly have a compatible, safe trainer ready to launch.
FLiNG / Lingon: Known for high-quality, clean trainers. Their v2.4 versions are reliable.
Cheat Happens: Offers a premium manager that minimizes false positives from antivirus software, though they have a paid subscription model for some features.

Performance: 9/10 (Very stable on final patch).
Features: 10/10 (Everything you need for a sandbox power trip).
Ease of Use: 8/10 (One-click activation usually works, but requires antivirus exception).

If your trainer is too old, you can right-click the game in Steam > Properties > Betas, and roll back to an older version that matches your trainer.