The main comparison between the three Undertales is that basically Understream 2 was made to be the same but with exclusive posting rules, and that the NEW_Undertale stream (now the modern United Undertale Social Republic) was made in my own retaliation against InteractionSystem and Flare before December 5, 2025, when I was unfairly banned twice and wasn’t listened to by both System and Flare, and decided to make my own home during that time housing myself, TOAA, and my friends before TOAA became who he is now.
Historically, the NEW_Undertale stream is the first carbon copy of the Undertale stream because Understream 2 didn’t exist yet, except that the NEW_Undertale was created as a symbol of peaceful desire instead of violence and corruption, because of how bad System and Flare controlled the Undertale stream.
The UUSR currently houses the Premier, Secretary of State, and the current active co-founder which is Void Merchant as the leading powers within the UUSR, but other senior moderators and members of the UUSR are moderating the NEW_Undertale stream.