Modded saves often skip story missions to unlock characters immediately, but this breaks the "Road to Ninja" map progression, leaving players unable to access certain gates.
On online co-op (via PPSSPP multiplayer), veteran players despise modded save users because a single Level 999 Naruto can one-shot the final boss, ruining the experience for others.
A fascinating technical hurdle in this field is the Checksum.
Finding academic or high-quality analytical papers specifically on modded save data for a specific game like Naruto Shippuden: Ultimate Ninja Impact is rare, as this is a niche topic within the broader field of Game Studies.
However, I can synthesize an interesting technical analysis based on how the modding community reverse-engineers save data structures. Below is a breakdown of why this specific topic is technically fascinating, presented in the style of a technical paper summary.