Crowns are the premium grind currency. A game reference says you get them by defeating bosses, standing on King of the Hill, or capturing flags. Eggs, auras, and pet auras all spend them. Event currencies are separate and only exist during their event.
Boss payout, as listed
One reference says every point of damage on a boss pays 12,000 Coins and 1 Crown, increased by pets and auras. It also says there are three types of non-event bosses, without naming them in the section that was retrieved. Event bosses can add event currency. Those names and the 12,000 figure should be rechecked in game if a later update changed boss math.
Boss-hit upgrades are a Crown ladder sold near the sell area. The published rows are:
| Upgrade | Hits | Crown cost |
|---|---|---|
| Boss Hit +1 | 1 | 5K |
| Boss Hit +2 | 2 | 60K |
| Boss Hit +3 | 3 | 720K |
| Boss Hit +4 | 4 | 8.64M |
| Boss Hit +5 | 5 | 103.68M |
| Boss Hit +6 | 6 | 1.244B |
| Boss Hit +7 | 7 | 14.93B |
| Boss Hit +8 | 8 | 179.159B |
| Boss Hit +9 | 9 | 2.15t |
| Boss Hit +10 | 10 | 25.799t |
Buy the next hit upgrade when the extra boss ticks return more Crowns than the next aura you can afford. There is no published breakpoint that fits every pet setup.
Auras
Auras are Crown Shop buffs. Across matching tables the four stats are Strength, a second stat called either defence or health, Coins, and walk speed. VIP is the exception: it is listed at 349 Robux, not Crowns, with x2.75 Strength, x1.5 defence/health, x1.38 Coins, and x1.25 walk speed.
Fire through Ninja agree on the early Crown rows. Sacred is the first Strength conflict: x4 on the labeled table and x3 on another extract, at the same 48K Crown cost. Later aura rows exist and were truncated in retrieval. Use the aura catalog for the rows that were complete.
Pet auras
Pet auras are also bought with Crowns and are much more expensive. The reference says they do not multiply the pet's own stats. They multiply Strength, Coins, and Crowns as a separate boost. Fire pet aura is listed at x1.05 Strength, x1.05 Coins, x1.02 Crowns, for 96B Crowns. Each following named row steps those figures up. Do not buy one instead of a real aura you can already use.