Summon and crate odds
| Rarity | Per summon | At least one in 25 | Expected |
|---|---|---|---|
| Basic | 49.89% | 99.9%+ | 12 |
| Uncommon | 35% | 99.9%+ | 8.75 |
| Rare | 10% | 92.8% | 2.50 |
| Epic | 4% | 64.0% | 1.00 |
| Legendary | 1% | 22.2% | 0.25 |
| Mythic | 0.1% | 2.5% | 0.03 |
| Omega | 0.005% | 0.12% | 0.00 |
These are the units each rarity can give. When a rarity has several, the summon picks one of them:
How luck is counted
The rates come straight from the game's summon table. Luck only touches Legendary, Mythic and Omega, which is how the game words the x2 Luck pass, and the Basic share shrinks to make room. The client doesn't say how the pass, a Luck Potion, a luck event and index milestones combine, so the calculator multiplies them. Treat a stack of three or four boosts as an estimate.
Crate values use today's prices from the value list. Several crates have no ticket price because they only come from events, packs and the season pass.
Questions
What are the summon rates in Alliance Tower Defense?
Basic 49.89%, Uncommon 35%, Rare 10%, Epic 4%, Legendary 1%, Mythic 0.1%, Omega 0.005%. Exclusive and Event units never come from summons.
How rare is an Omega?
0.005% a summon, about 1 in 20,000. The only Omega in the summon is Upgraded Titan Cinema Man. Doubling luck makes it 1 in 10,000.
What does the x2 Luck pass do?
The game describes it as doubling the luck on Legendary, Mythic and Omega. A Mythic goes from 0.1% to 0.2% a summon, and the extra comes out of the Basic share.
Does the unit index give luck?
Yes. Every 15 units you discover adds 5% luck, so the full index of 60 units is 4 milestones and +20%.
What's in the Spooky Crate?
Pumpkin Camera Man 80%, Skeleton Large TV Man 13.9%, Witch TV Woman 5%, Large Grim Reaper 1%, Upgraded Titan Jack'o Man 0.1%. It costs 200 pumpkins in the Halloween shop.
