Project Gamma Promo Codes
There's a low chance you'll find a working Project Gamma promo code right now. On this page you'll find all 30 codes ranked by what's worked at checkout. The best one to try is BOOST5, though nothing's a sure thing.
How often Project Gamma codes work
Each bar is one week of real shopper results: the greener the bar, the better the chance a code worked that week. Paler bars carry limited data.
| Discount | Last used | Performance | Promo code |
|---|---|---|---|
| Up to 20% off storewide | 5w ago | JULY4 | |
| UP TO 50% OFF THROUGH CYBER MONDAY | — | — | BLACKFRIDAY50 |
| 25% off 4th of July Sale | — | — | REDWHITEBLUE |
| 10% off | — | — | M5HUB |
| 30% off Sitewide | — | — | PGHOLIDAY |
| 30% off Sitewide | — | — | BLACKFRIDAY |
| 5% off Ending soon | — | — | SPOOLIN |
| 5% off | — | — | ALLTREATS |
| 20% off | — | — | CLOSINGSALE |
| 15% off | — | — | FALLSALE |
| 5% off your next purchase | — | — | GAM3G80 |
| 5% off Sitewide | — | — | GAM3 |
| 20% off everything | 9d ago | SUMMER20 | |
| Up to 20% off select items | 9d ago | PGVALENTINE | |
| 25% off sitewide | 6w ago | LABOR20 | |
| 25% off Sitewide | 6w ago | PGFRIDAY | |
| Promo code: M3LIST | 6w ago | M3LIST | |
| 15% off intakes | 6w ago | BOOSTLOADING | |
| 15% off these packages ALL MONTH LONG | 5mo ago | PROJECTWEST | |
| 20% off | — | — | MEMORIAL2026 |
| 30% off | — | — | PG2026 |
| 20% off select products | — | — | JULY25 |
| Up to 20% off select products | — | — | MEMORIAL25 |
| Up to 20% off select products | — | — | SPRING25 |
| 25% off sitewide | — | — | PGHOLIDAY25 |
| 15% off everything | — | — | PGCYBER15 |
| 20% off everything in store | — | — | PGFRIDAY20 |
| 10% off your order | — | — | TRICK10 |
| 15% off your order | — | — | REDWHITEBOOST |
About this page
Introducing a more honest way to find coupon codes
Every code has a history, and we track it
Codes fail for boring reasons: they expire, they only cover one category, they only apply to a first order. Calling any of them "verified" would be a guess dressed up as a fact. We publish the chance instead, built from checkout data and shopper answers, and we track it over time.
Likely not workingMixed resultsHigh chance of working
You'll find one of these charts on every code we list, tracking how it has performed over time.
When there is nothing worth trying, we say so
When we don't think there is a working code for a store, we say so right at the top of the page, before you spend time scrolling.
Good chance right now78%
Nothing likely right now9%
A code that works at breakfast can be dead by lunch. Nobody can promise otherwise, so we don't stamp anything here as "working" or "verified". We tell you the chance of a code working instead, based on real shopper feedback and data, and when the chance is poor we say that out loud.
