The run does not have to end
Beating the final boss normally ends the run in victory. Endless mode offers the opposite: keep climbing and face battles that grow harder with each step. The goal becomes survival, not a fixed finish.
This is where a good deck shows its depth. A deck that won the boss by a hair will not last. A deck built to scale can run far.
What gets harder
Each endless battle adds pressure beyond the normal run. Enemies grow, rules tighten, and the margin for error shrinks. The exact curve lives in the game’s data, so we describe the shape rather than quote numbers.
The practical effect is the same: your early answers stop being enough. You need layers of defense and a scaler that outpaces the climb.
Build for depth, not burst
Burst decks win single fights and stall in endless. Scaling decks, which grow each battle, pull ahead as the road lengthens. Favor cards that improve over time and effects that stack.
Flexible answers also matter. Endless throws varied threats, so a deck that only answers one pattern will meet its match. Keep a general defense underneath your plan.
Protect the engine
Your scaling unit is the engine. Keep it alive with a strong front and a few control spells. If the engine dies, the climb ends regardless of your burst.
The floor positioning page shows how to shield a back-row scaler behind a wall that holds.
Know when to stop
Endless has no safe ending, only a longer fall. Push while your deck is ahead and step off when the math turns. The point is to learn how far your plan reaches, not to chase a number.
Next: Common mistakes.