Soul Tracker : Random TD

Between the underworld and the land of the living stand two gates. Souls are trying to slip through. You are the envoy sent to guard them: the Soul Tracker.

[Summon, place, merge]
- You never choose which tower a summon brings. Don't like it? Reroll.
- Merge two identical towers and they become one tower a tier higher. Which lineage it turns into is up to luck.
- Board cells are limited, so every placement is a decision.
- Each soul that escapes through the far gate costs a life. Run out, and the gate falls.

[8 lineages, 5 tiers, 40 guard towers]
A hammer that hits hard up close, a sniper cannon that picks off one soul from the farthest range, a chain that jumps from soul to soul, a frost crystal that slows them down. Each lineage covers a different area and reach, and every tier grows its shape.

[The trial of the former envoys]
When you are ready, summon the spirit of a former envoy yourself. Pass the trial for a big reward; let it slip through and the loss is just as big.

[Tower of Hell, 20 basement floors]
The deeper you go, the tougher the souls and the more waves you must hold. Every floor you clear for the first time pays gems. Runs are short, and you can speed them up to 4x.

[Growth between runs]
- Collect and enhance 48 cards to power up your lineages. Spare copies can be combined into a card of the next grade.
- Upgrades run on their own timers, and waiting costs nothing.
- Ghost Gate Barrier: while you are away, the eight lineages hold the barrier and gather Yeopjeon for you.

[Reasons to come back]
Attendance rewards, daily and weekly missions, achievements, a season pass, and a ranking against every envoy before you.

The watch between the two gates starts now.