Monkey Bomb Tag cases — drop rates and banana cost
Pick a case, set your opens, and see the exact odds and banana cost for every cosmetic. Nine Monkey Bomb Tag cases tracked from community case openings.
Jim Liu — last verified June 16, 2026
Free cases — 100 Bananas / open
Premium cases — 49 Robux / open
50 opens = 5,000 Bananas this session.
| Cosmetic | Drop rate | Chance in 50 | Expected opens | Cost to expect |
|---|---|---|---|---|
| Swirl | 50.0% | ✓ 100% | 2 | 200 Bananas |
| Metal | 30.0% | ✓ 100% | 4 | 400 Bananas |
| Cotton | 10.0% | 99.5% | 10 | 1,000 Bananas |
| Leopard | 9.5% | 99.3% | 11 | 1,100 Bananas |
| Volcanic | 0.50% | 22.2% | 200 | 20,000 Bananas |
“Chance in 50” is the probability of pulling that cosmetic at least once across 50 opens: 1 − (1 − rate)50. “Expected opens” is the average pulls to first hit (1 / rate). Drop rates are community-tracked, not officially published by ChillyTea Studios.
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Reference data
All Monkey Bomb Tag cases at a glance
Monkey Bomb Tag has nine cases split into two groups. The six free cases are bought with Bananas, the in-game currency you earn from rounds and code redemptions, at a flat 100 Bananas per open. The three premium cases are bought with Robux at 49 Robux per pull and hold cosmetics that are not available from any free case. The table below is the quick map; use the calculator at the top of the page for the per-item math.
| Case | Tier | Cost / open | Items | Cosmetic type | Rarest pull |
|---|---|---|---|---|---|
| Tails Case | Free | 100 Bananas | 5 | Tail skins | Volcanic (0.5%) |
| Lapis Case | Free | 100 Bananas | 5 | Tail skins | Blood Moon (0.5%) |
| Effects Case | Free | 100 Bananas | 5 | Trail effects | Raven (5%) |
| Bombs Case | Free | 100 Bananas | 3 | Bomb reskins | Toy Bomb (10%) |
| Emotes Case | Free | 100 Bananas | 5 | Lobby emotes | Zoom Zoom (5%) |
| Summer Case | Free | 100 Bananas | 5 | Seasonal emotes | Six Seven (2%) |
| Void Tails Case | Premium | 49 Robux | 5 | Premium tails | Glitch (0.2%) |
| Flame Bomb Case | Premium | 49 Robux | 5 | Premium bombs | Purple Dragon (0.65%) |
| Gold Effects Case | Premium | 49 Robux | 5 | Premium effects | Glitch Burst (0.6%) |
Drop rates are community-tracked. Official figures not published by ChillyTea Studios as of June 16, 2026.
Mechanic explained
How Monkey Bomb Tag cases and Bananas work
Bananas are the only thing the codes give you. You earn them by surviving rounds and by redeeming active codes, then you spend them at the Case Shop near the Monkey King statue in the lobby. Each free case costs 100 Bananas to open, and opening one rolls a single cosmetic from that case's item pool using the fixed drop rates shown in the calculator. There is no pity timer that I have seen across tracked openings, so a 0.5% item stays at 0.5% on every single open regardless of how many times you have already opened that case.
The important thing to understand about Monkey Bomb Tag cases is that none of the rewards touch gameplay. Tail skins, trail effects, bomb reskins, and emotes are all cosmetic. A 0.5% Volcanic tail does not run faster than a 50% Swirl tail. The only difference cosmetics make is how you look to other players during a chase, and emotes only show in the lobby between rounds. This matters for how you plan spending: you are buying personality, not power, so chasing the rarest item is a vanity goal, not a progression requirement.
Premium cases work the same way but use Robux instead of Bananas. The Void Tails Case, Flame Bomb Case, and Gold Effects Case each cost 49 Robux per pull and contain skins you cannot pull from any free case. Because the chase items in premium cases sit between 0.2% and 0.65%, the expected Robux spend to land a specific top-tier skin is high. I treat premium cases as something you open a handful of times for fun rather than grind for a guaranteed pull.
Methodology
How to read the Monkey Bomb Tag case drop-rate math
The calculator runs two pieces of math from the fixed case odds. Knowing what each number means stops you from over-spending on a chase that variance makes unrealistic.
Expected opens to first pull
This is the average number of opens before a given cosmetic appears once, computed as ceiling(1 / drop rate). A 10% item averages 10 opens. A 0.5% item averages 200 opens. It is an average, not a guarantee — you can pull a 0.5% item on open one or still be empty at open 300. Multiply expected opens by 100 Bananas (or 49 Robux for premium) to read the expected cost.
Cumulative chance across N opens
The Chance-in-N column is your true confidence level for a planned session: 1 − (1 − rate)^N. For a 9.5% Leopard tail across 30 opens that is about 95%, so 30 opens (3,000 Bananas) makes Leopard near-certain. For a 0.5% item across 30 opens it is only about 14%, which is why the rarest cosmetics are multi-week grinds, not single-session targets. The column is colour-coded so you can see at a glance whether your planned opens give you a comfortable shot.
I started logging Monkey Bomb Tag case openings in May 2026 because the existing guides listed drop rates but none of them turned those rates into a banana budget. Tracking my own opens confirmed the published community percentages were consistent at the common and rare tiers; the 0.5% items I cannot personally confirm with high confidence because I have only pulled a handful, but the rates line up with the larger community logs. Treat the rarest figures as the least certain.
Strategy
Which Monkey Bomb Tag case should you open?
If you have just redeemed codes and want the most visible payoff for a small banana budget, open the Bombs Case first. It only holds three items, so even the rarest (Toy Bomb at 10%) is realistic inside 10 opens, and the bomb reskin is one of the most visible cosmetics in an actual round because every tagged player carries it. The Effects Case is the next best visible upgrade since trail effects show during chases.
If you are after a rare tail to stand out, the Tails Case and Lapis Case both give a 9.5% shot at a distinctive skin (Leopard and Water) that lands inside a normal banana budget. Save the chase for the 0.5% items (Volcanic, Blood Moon) for when you have a large banana stockpile and accept it is a long grind. Emotes are the lowest priority because they only appear in the lobby and add nothing to a round — open the Emotes Case last, once you already have a tail and effect you like.
For premium cases, only spend Robux if you specifically want a skin that is not in any free case. The Gold Effects Case has the most eye-catching pulls (Blue Flames, Glitch Burst) but the top item sits at 0.6%, so go in expecting to open it for fun rather than to guarantee the chase skin. Use the calculator to see exactly how many pulls your Robux budget buys before you commit.
About Jim Liu
Sydney-based developer and Roblox tracker. I log Monkey Bomb Tag case openings by case and cosmetic to turn community drop rates into a real banana budget, and I cross-check the figures against shared community logs before publishing. I update this page within 48 hours when a patch changes case contents or odds. More on the About page.
Common questions
Frequently asked questions
How many cases are in Monkey Bomb Tag?
There are nine cases tracked as of June 2026: six free cases bought with Bananas (Tails, Lapis, Effects, Bombs, Emotes, Summer) and three premium cases bought with Robux (Void Tails, Flame Bomb, Gold Effects). Each free case costs 100 Bananas per open. The three premium cases cost 49 Robux per pull. New cases arrive with seasonal updates, so the Summer Case is the clearest example of a limited-window addition.
What is the rarest item you can get from Monkey Bomb Tag cases?
Among the free cases, Volcanic from the Tails Case and Blood Moon from the Lapis Case sit at 0.5% drop rate — roughly 200 expected opens, or about 20,000 Bananas each. Among premium cases, Glitch from the Void Tails Case is the rarest at 0.2%, with Purple Dragon (Flame Bomb Case) at 0.65% and Glitch Burst (Gold Effects Case) at 0.6%. None of these change your speed or jump in a round; they are purely visual.
Do Monkey Bomb Tag cases give any gameplay advantage?
No. Every cosmetic from every case is purely visual — tails, trail effects, bomb reskins, and emotes. They do not change your movement speed, jump height, or tag range. Tail and effect cosmetics are the most visible to other players during a round, while emotes are lobby-only. Spend Bananas on cases for personality, not for a competitive edge.
How do I calculate how many Bananas I need for a specific cosmetic?
Use the calculator at the top of this page. Pick the case, then read the cosmetic's Expected opens column — that is the average number of opens to pull it once (1 divided by its drop rate). Multiply by 100 Bananas to get the expected cost. For example, Leopard from the Tails Case is 9.5%, so expected opens is about 11, which is roughly 1,100 Bananas. The Chance-in-N column tells you your confidence level if you only plan a fixed number of opens.
Are the Monkey Bomb Tag case drop rates official?
ChillyTea Studios has not published an official drop-rate table as of June 2026. The percentages on this page are community-tracked from shared case-opening logs and cross-checked against multiple guide sites. They are internally consistent but should be treated as calibrated estimates. If a patch changes case contents or odds, this page is updated and the verification date at the top is bumped.
Which case gives the best value for Bananas?
For guaranteed-feeling pulls, the Bombs Case is the most efficient free case because it only holds three items and the Hearts Bomb sits at 60% — about two expected opens, or 200 Bananas. If you want a rare tail to stand out, the Tails Case and Lapis Case give a 9.5% shot at Leopard and Water respectively, which is realistic within a normal banana budget. The 0.5% items in those cases are the long-term grind, not a same-session target.
Is the Robux premium case worth it over the free cases?
Premium cases (Void Tails, Flame Bomb, Gold Effects) hold cosmetics you cannot get from free cases, so it depends on whether you specifically want one of those skins. At 49 Robux per pull and chase items in the 0.2% to 0.65% range, the expected Robux cost to land a top-tier premium item runs into the thousands of Robux. If you only want to look different, the free cases give plenty of variety for Bananas you earn just by redeeming codes.