Coin Quest: three save slots

Collect coins with the arrow keys. The alien, coins, backdrop and sound are built into Scratch for Java. Press 1, 2 or 3 to select a slot, S to save, L to load, and R to start a fresh round.

Selecting a slot does not overwrite or load it. An empty slot loads a fresh round; a damaged save reports an error and leaves the current round intact. Save different scores to all three slots, reload this page, then load them again.

SaveData stores public data fields as JSON. On desktop the files are in your user-data folder, independently of the game installation. In the browser, IndexedDB keeps one record per game ID and slot, scoped to this site's origin and your browser profile. Browser storage can be cleared or evicted, and these saves are not automatically synchronized between computers or with desktop saves.

Save after a checkpoint or an explicit player action. The game pauses movement during saving and loading, and reports success after the write has committed.