GOG Enhancer

GOG Enhancer is an unofficial third-party browser extension that adds the features GOG.com does not ship with — without any analytics, ads, or remote code. ▸ Live currency conversion Converts prices to ILS, EUR, GBP, PLN, USD, or RUB using exchange rates fetched from frankfurter.app (a free, public, ECB-backed rate service). Works whether GOG shows you USD, EUR, or any other locale — full cross-currency conversion via the rate matrix. ▸ Price-history tracking + sale-event markers Records a price snapshot every time you visit a game page. The game panel shows current vs. all-time-low vs. average on a sparkline with hover tooltips for each data point and dashed markers at every 30%+ price drop. A celebratory banner highlights when the current price matches the all-time low. Fully local — no server. ▸ Refund window timer Mark when you bought a game and the panel counts down GOG's 30-day money-back window for you. Optional desktop notification when 1–2 days remain (opt-in). ▸ IsThereAnyDeal compare button One click on a game page opens an IsThereAnyDeal search for the same title across Steam, Epic, Humble, and other stores. ▸ Personal tags & notes (with rename, merge, colors, drag-to-reorder) Add private tags and notes to any game. The dashboard lets you search, filter, assign per-tag colors, rename or merge tags, drag pills to reorder, and export or import via CSV. Notes support inline markdown (bold, italic, links, lists, code). ▸ Library year-in-review Annual stats: games tracked, biggest price drop, most-watched title, watch advantage (current vs. peak across the library), refund windows logged. All computed from your local data. ▸ Hebrew translations + RTL Optional Hebrew dictionary covering navigation, UI strings, and common patterns. Real RTL with logical-property CSS — not a flipped page. ▸ Wishlist sale alerts + quick filters Wishlist-icon badge counts items on sale. Quick filter bar offers "On sale", "Under $10/$25", "Rated 4.5+", and dynamic genre chips (RPG / Horror / Strategy / Sci-fi / Indie). Optional desktop notification when wishlist deals appear (opt-in). ▸ Theme picker + visual upgrade Four themes: Neon (default), Classic GOG, CRT Green, Sunset. System-font monospace numerals for prices, era-aware accents (CRT scan-lines for classics, neon underglow for cyberpunk/witcher, genre-tuned hover effects for RPG/Horror/Strategy/Sci-fi/Indie titles), gold pill on "Good Old Game" markers, glassmorphism on the game-page panel with a blurred hero backdrop pulled from the page's cover art. ▸ Privacy-first No analytics, no third-party tracking, no Google Fonts, no remote code. All your tags, notes, and history stay on your device. Two outbound requests only: exchange rates from frankfurter.app and the public GOG mods catalog. Both omit cookies and identifying information. Desktop notifications (if you enable them) use the local chrome.notifications API — nothing transmitted. ▸ Open source under the MIT license. Verifiable end-to-end. DISCLAIMER: This is an unofficial third-party tool. It is not affiliated with, endorsed by, or sponsored by GOG sp. z o.o. or CD Projekt S.A. The "GOG" name is used nominatively to describe the website the extension works with. Privacy policy: https://drummingbird1.github.io/GOGEnhancer/privacy.html Source code: https://github.com/DrummingBird1/GOGEnhancer Extension Site: https://drummingbird1.github.io/GOGEnhancer