CIS Battle 4 is a online tournament, organized by NarodCast as part of the CIS Battle series.

The event, which took place from 22.12.2025 to 30.12.2025, 8 teams competed for the prize pool of 15 000$. Location: EEU

Participants:

• 8 invited teams.

Group stage - 22.12.2025 - 28.12.2025:

• Single round-robin;
• All matches - Bo3;
• Teams ranked 1st and 4nd advance to the upper bracket semifinals;
• Teams ranked 5rd to 6th advance to the upper bracket quarterfinals;
• The remaining teams are eliminated.

If teams have equal scores, the following rules apply:

1. Head to head score;
2. Neustadl score;
3. Comparative results against each team from the top down until the tie is resolve

Playoffs - 29.11.2025 - 30.12.2025:

• Double-elimination bracket;
• All matches - Bo3, Grand Final - Bo5.