{"id":14527,"date":"2026-09-24T10:32:02","date_gmt":"2026-09-24T10:32:02","guid":{"rendered":"https:\/\/playgama.com\/blog\/?p=14527"},"modified":"2026-09-24T10:32:02","modified_gmt":"2026-09-24T10:32:02","slug":"how-does-a-cross-device-cloud-save-system-work-for-browser-g","status":"publish","type":"post","link":"https:\/\/playgama.com\/blog\/business-faqs\/how-does-a-cross-device-cloud-save-system-work-for-browser-g\/","title":{"rendered":"How does a cross-device cloud save system work for browser games?"},"content":{"rendered":"

A cross-device save writes progress to a platform’s cloud storage (keyed to the logged-in player) instead of the browser’s local storage, so the same save loads on any device. The game calls a load before gameplay starts and a save on meaningful state changes, treating missing data as defaults rather than an error.<\/strong><\/p>\n

At a glance<\/h2>\n\n\n\n\n\n\n\n
Fact<\/th>\nValue<\/th>\nSource<\/th>\n<\/tr>\n<\/thead>\n
Cloud saves require player to be authorized<\/td>\non platform<\/td>\n<\/td>\n<\/tr>\n
Local storage vs platform storage<\/td>\ndevice-only vs cross-device<\/td>\nwiki.playgama.com<\/a><\/td>\n<\/tr>\n
Missing save keys should return<\/td>\nnull, use defaults<\/td>\nwiki.playgama.com<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

A cross-device save is really two decisions: where the data lives, and when your game reads and writes it. Instead of writing progress to the browser’s own local storage (which is tied to one device and one browser), the game writes to a storage location the platform keeps on its servers, keyed to the player’s logged-in account. Load that data once before gameplay starts; save it again only on meaningful changes – level complete, purchase, settings change – not every frame.<\/p>\n

The Playgama Bridge Storage module<\/a> handles this automatically: it picks the most suitable storage for the current platform, including cloud saves when available, so the game code doesn’t need per-platform branching. Load with bridge.storage.get([...])<\/code> and save with bridge.storage.set(...)<\/code>; never write player data straight to localStorage or the engine’s own local persistence (PlayerPrefs, local files), or it won’t reach the cloud.<\/p>\n

What happens when there’s no saved data yet?<\/h2>\n