Runaway Echoes opens with the September 9 update and runs to September 30, 05:59 (UTC+8). It is a run-based mode on the Rails of Delusion, and the progress it keeps between runs is what separates it from NTE’s other limited events.
Key Details
| Event | Runaway Echoes |
| Start | September 9, 2026, after the update |
| End | September 30, 2026, 05:59 (UTC+8) |
| Rewards | “Unbroken Echo” title, Annulith, Fabricated Dice, Fons, Floe Cinema Tickets, Heterogeneous Units |
Inside a Run
You start each run at level 1 and climb by killing what stands on the Rails of Delusion and collecting the EXP orbs it drops. The ceiling is Lvl 180, reached inside the run and gone when it ends.
Every level-up offers a card. There are three kinds — Skill, Upgrade and Relic — and the offer itself can be manipulated: lock a card you want to keep seeing, remove one you never want offered again, or reroll the hand.
An Echo Boss spawns every 60 seconds, and killing one pays a large block of EXP and extra item drops.
What Carries Over
Finishing a run pays Talent Points, and those buy permanent stat bonuses on the Skill Tree. Every run after that starts with them.
That is the part worth planning around: the level you climb to belongs to the run, and the Skill Tree is what the run leaves behind.
