Play KGB online

• Press Play game, then click the game area once. This gives the game keyboard focus and, for mouse games, captures the pointer.
• If the "Click to capture mouse" overlay stays visible, click the game area again.
• Press Esc to release the mouse. While the pointer is captured, mouse clicks belong to the game, so release it before using the toolbar outside the player.

• ↑ ↓ ← → or WASD: move or select.
• Enter or Space: confirm, select, fire.
• Esc: cancel, go back, or open the game's pause menu.
• Tab: move between menu items in some games.
• F1 is often help or information; F2–F12 are game-specific (save, load, options, map, and so on).
• Click the game area and type for text prompts. If the physical keyboard does not respond, open the js-dos sidebar and use the soft keyboard.

• Left click activates or shoots in most mouse games; some games also use the right button.
• Click the game area to capture the mouse. The pointer is hidden while captured; press Esc to release it.
• Adjust sensitivity in the js-dos sidebar under Settings → Mouse sensitivity.
• Some games are keyboard-only or support a joystick; the mouse may do nothing in those games.

The toolbar under the game is grouped by purpose:

• Game: Pause/Resume and Restart. Restart asks for confirmation first.
• View: Fullscreen.
• Speed: Slower, Faster and Default. The current CPU cycles are shown next to them; Default restores the value from the game bundle.
• Sound: volume slider.
• Save: Reset save. Ticking the confirmation checkbox is required before the save is deleted.

The game engine has its own sidebar at the left edge of the game area. Click the thin bar to open it.

• Save: save the current game files.
• Keyboard: on-screen soft keyboard for text prompts.
• Fullscreen: fullscreen the game.
• TURBO: performance stats and CPU cycles. Choose Fast Forward or Frame Skip to reveal the manual Cycles field.
• Cycles / diagnostics: engine and timing information.
• Settings: mouse capture, sensitivity, aspect ratio, image rendering, theme, volume and special keys.

• Not all games can be saved: only the files a game writes are stored, locally in this browser (IndexedDB), not on the server. Pausing, leaving the page and the sidebar Save button save those changes, so a game that keeps its progress in memory starts over after a reload.
• Toolbar → Reset save → tick the confirmation checkbox deletes the local save for this game and starts fresh next time. Restart in the toolbar also asks for confirmation.
• Re-importing a new game bundle starts a new save slot for that bundle version.
• Use the Fullscreen button or the js-dos fullscreen button. Esc may exit fullscreen or release the mouse, depending on the browser.
• If the game does not start, use Try again. The player needs HTTPS (or localhost), WebAssembly, OPFS and a modern browser.