Good games.
Better together.
Open your browser. Find your next obsession.
One AltStack Social account. Your progress comes with you.
The library
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Your game.
Our whole community.
AltStack Social Plus members can publish their own self-contained HTML5 games. Submit a ZIP under 1 GB, including all game files. Players stay right here in their browser.
Some originals include horror themes, jump scares and flashing effects; see each game’s opening content notes. Keyboard and mouse recommended; touch support depends on the game.
Cloud save SDK & submission guide ↗A new device. The same adventure.
Sign in to the same AltStack Social account to continue your saved checkpoints, unlocks and settings. The player confirms when progress reaches your account. Keep the page open until it says “Saved to your account.” Game checkpoint rules still apply; an unsaved combat moment may not be resumable.