This is a simple Tetris game built from scratch with javascript. Also has basic touch support and hence can be played on mobile phones as well Play Tetris built instantly on arcadefork - no download, no sign-up, works on any device.
Originally by 123survesh · undefined licence · source
Yes. Tetris built runs entirely in your browser on arcadefork - no download, no account, no payment.
Tetris built is an open-source project by 123survesh, published under the MIT licence. The original source is linked from the credits page.
It is served as a normal web page, so it scales to your screen. If it needs a keyboard, the on-screen controls are still there.